Add missing 'else' to fix all devices showing up as "host".

Bug: http://b/20705355
Change-Id: I4f7830278f0c2bc87d95d148d85455b8da894645
diff --git a/adb/adb.cpp b/adb/adb.cpp
index 4c90dcc..e526914 100644
--- a/adb/adb.cpp
+++ b/adb/adb.cpp
@@ -436,9 +436,10 @@
         D("setting connection_state to CS_SIDELOAD\n");
         t->connection_state = CS_SIDELOAD;
         update_transports();
+    } else {
+        D("setting connection_state to CS_HOST\n");
+        t->connection_state = CS_HOST;
     }
-
-    t->connection_state = CS_HOST;
 }
 
 void handle_packet(apacket *p, atransport *t)