Fix cpplint readability/braces issues

Change-Id: I56b88956510077b0e13aad4caee8898313fab55b
diff --git a/compiler/dex/growable_array.h b/compiler/dex/growable_array.h
index 3bfbcd4..08a6478 100644
--- a/compiler/dex/growable_array.h
+++ b/compiler/dex/growable_array.h
@@ -50,7 +50,7 @@
       public:
         explicit Iterator(GrowableArray* g_list)
           : idx_(0),
-            g_list_(g_list) {};
+            g_list_(g_list) {}
 
         // NOTE: returns 0/NULL when no next.
         // TODO: redo to make usage consistent with other iterators.
@@ -69,7 +69,7 @@
         static void* operator new(size_t size, ArenaAllocator* arena) {
           return arena->NewMem(sizeof(GrowableArray::Iterator), true, ArenaAllocator::kAllocGrowableArray);
         };
-        static void operator delete(void* p) {};  // Nop.
+        static void operator delete(void* p) {}  // Nop.
 
       private:
         size_t idx_;
@@ -155,7 +155,7 @@
     static void* operator new(size_t size, ArenaAllocator* arena) {
       return arena->NewMem(sizeof(GrowableArray<T>), true, ArenaAllocator::kAllocGrowableArray);
     };
-    static void operator delete(void* p) {};  // Nop.
+    static void operator delete(void* p) {}  // Nop.
 
   private:
     ArenaAllocator* const arena_;