[7885]wlbt : Fix coverity issues (Critical and Major)

Fix coverity issues (Critical and Major)

Change-Id: I4bf05e9bb1fe4e0cbcb3997aab06383859bbf9af
SCSC-Bug-Id:SSB-30512
Signed-off-by: Pragya Gupta <pragya.gupta@samsung.com>
diff --git a/gscan.cpp b/gscan.cpp
index b6c104c..f58b59c 100755
--- a/gscan.cpp
+++ b/gscan.cpp
@@ -456,7 +456,7 @@
             return result;
         }
 
-      
+
         return result;
     }
 
@@ -508,7 +508,7 @@
             if(*mHandler.on_scan_event)
                 (*mHandler.on_scan_event)(evt_type, evt_type);
         } else if(event_id == GSCAN_EVENT_FULL_SCAN_RESULTS) {
-            uint32_t bucket_scanned;
+            uint32_t bucket_scanned = 0;
             wifi_scan_result *scan_result = NULL;
             for (nl_iterator it(vendor_data); it.has_next(); it.next()) {
                 if (it.get_type() == GSCAN_ATTRIBUTE_SCAN_BUCKET_BIT) {
@@ -596,7 +596,10 @@
             wifi_cached_scan_results *results, int max, int *num)
         : WifiCommand(iface, -1), mScans(results), mMax(max), mNum(num),
                 mRetrieved(0), mFlush(flush), mCompleted(0)
-    { }
+    {
+        memset(mScanResults,0,sizeof(mScanResults));
+        mNextScanResult = 0;
+    }
 
     int createRequest(WifiRequest& request, int num, byte flush) {
         int result = request.create(GOOGLE_OUI, SLSI_NL80211_VENDOR_SUBCMD_GET_SCAN_RESULTS);
@@ -746,7 +749,9 @@
     BssidHotlistCommand(wifi_interface_handle handle, int id,
             wifi_bssid_hotlist_params params, wifi_hotlist_ap_found_handler handler)
         : WifiCommand(handle, id), mParams(params), mHandler(handler)
-    { }
+    {
+            memset(mResults, 0, sizeof(mResults));
+    }
 
     int createSetupRequest(WifiRequest& request) {
         int result = request.create(GOOGLE_OUI, SLSI_NL80211_VENDOR_SUBCMD_SET_BSSID_HOTLIST);
@@ -858,7 +863,6 @@
             return NL_SKIP;
         }
 
-        memset(mResults, 0, sizeof(wifi_scan_result) * MAX_RESULTS);
 
         int num = len / sizeof(wifi_scan_result);
         num = min(MAX_RESULTS, num);
@@ -923,7 +927,10 @@
     SignificantWifiChangeCommand(wifi_interface_handle handle, int id,
             wifi_significant_change_params params, wifi_significant_change_handler handler)
         : WifiCommand(handle, id), mParams(params), mHandler(handler)
-    { }
+    {
+        memset(mResultsBuffer,0,sizeof(mResultsBuffer));
+        memset(mResults,0,sizeof(mResults));
+    }
 
     int createSetupRequest(WifiRequest& request) {
         int result = request.create(GOOGLE_OUI, SLSI_NL80211_VENDOR_SUBCMD_SET_SIGNIFICANT_CHANGE);
@@ -1115,6 +1122,7 @@
         : WifiCommand(handle, id), mHandler(handler)
     {
         epno_params = params;
+        memset(&mResults,0,sizeof(wifi_scan_result));
     }
 
     int createSetupRequest(WifiRequest& request) {
@@ -1256,6 +1264,7 @@
             return NL_SKIP;
         }
 
+
         mResults = *(wifi_scan_result *) event.get_vendor_data();
         if (*mHandler.on_network_found)
             (*mHandler.on_network_found)(id(), 1, &mResults);
@@ -1310,6 +1319,7 @@
         int num)
         : WifiCommand(iface, id), num_hs(num), mNetworks(NULL)
     {
+        mHandler.on_passpoint_network_found = NULL;
     }
 
     int createRequest(WifiRequest& request, int val) {
diff --git a/link_layer_stats.cpp b/link_layer_stats.cpp
index 64218e9..99ccea9 100755
--- a/link_layer_stats.cpp
+++ b/link_layer_stats.cpp
@@ -46,13 +46,21 @@
 public:
     LinkLayerStatsCommand(wifi_interface_handle handle, wifi_link_layer_params params)
         : WifiCommand(handle, 0), mParams(params)
-    { }
+    {
+        mStatsClearReqMask = 0;
+        mStatsClearRspMask = 0;
+        mStopReq = 0 ;
+        mStopRsp = NULL;
+
+    }
 
     LinkLayerStatsCommand(wifi_interface_handle handle,
         u32 stats_clear_req_mask, u32 *stats_clear_rsp_mask, u8 stop_req, u8 *stop_rsp)
         : WifiCommand(handle, 0), mStatsClearReqMask(stats_clear_req_mask), mStatsClearRspMask(stats_clear_rsp_mask),
         mStopReq(stop_req), mStopRsp(stop_rsp)
-    { }
+    {
+        memset(&mParams,0,sizeof(wifi_link_layer_params));
+    }
 
     int createSetRequest(WifiRequest& request) {
         int result = request.create(GOOGLE_OUI, SLSI_NL80211_VENDOR_SUBCMD_LLS_SET_INFO);
@@ -210,11 +218,16 @@
 
         // assuming max peers is 16
         wifi_iface_stat *iface_stat = (wifi_iface_stat *) malloc(sizeof(wifi_iface_stat) + sizeof(wifi_peer_info) * 16);
+        if (!iface_stat) {
+            ALOGE("Memory alloc failed for iface_stat in response handler!!!");
+            return NL_SKIP;
+        }
+
         // max channel is 38 (14 2.4GHz and 24 5GHz)
         wifi_radio_stat *radio_stat = (wifi_radio_stat *) malloc(sizeof(wifi_radio_stat) + sizeof(wifi_channel_stat) * 38);
-
-        if (!iface_stat || !radio_stat) {
-            ALOGE("Memory alloc failed in response handler!!!");
+        if (!radio_stat) {
+            ALOGE("Memory alloc failed for radio_stat in response handler!!!");
+            free(iface_stat);
             return NL_SKIP;
         }
 
diff --git a/wifi_hal.cpp b/wifi_hal.cpp
index e562018..d5725e2 100755
--- a/wifi_hal.cpp
+++ b/wifi_hal.cpp
@@ -670,11 +670,6 @@
         ALOGI("Successfully set RSSI monitoring");
         registerVendorHandler(GOOGLE_OUI, WIFI_RSSI_REPORT_EVENT);
 
-
-        if (result < 0) {
-            unregisterVendorHandler(GOOGLE_OUI, WIFI_RSSI_REPORT_EVENT);
-            return result;
-        }
         ALOGI("Done!");
         return result;
     }
@@ -761,10 +756,9 @@
 class GetFeatureSetCommand : public WifiCommand {
 
 private:
-    int feature_type;
+
     feature_set *fset;
-    int *fm_size;
-    int set_size_max;
+
 public:
     GetFeatureSetCommand(wifi_interface_handle handle, feature_set *set)
         : WifiCommand(handle, 0)
diff --git a/wifi_offload.cpp b/wifi_offload.cpp
index 8552959..eac0108 100755
--- a/wifi_offload.cpp
+++ b/wifi_offload.cpp
@@ -68,7 +68,13 @@
     // constructor for stop sending
     MKeepAliveCommand(wifi_interface_handle iface, u8 index, GetCmdType cmdType)
         : WifiCommand(iface, 0), mIndex(index), mType(cmdType)
-    { }
+    {
+        mIpPkt = NULL;
+        mIpPktLen = 0;
+        mSrcMacAddr = NULL;
+        mDstMacAddr = NULL;
+        mPeriodMsec = 0;
+    }
 
     int createRequest(WifiRequest &request) {
         int result;