Fix some defects identifies by Coverity Prevent. All are false...

src/hashmap.cc

Index: src/hashmap.cc
===================================================================
--- src/hashmap.cc	(revision 2520)
+++ src/hashmap.cc	(working copy)
@@ -194,7 +194,10 @@
 void HashMap::Initialize(uint32_t capacity) {
   ASSERT(IsPowerOf2(capacity));
   map_ = reinterpret_cast<Entry*>(allocator_->New(capacity * sizeof(Entry)));
-  if (map_ == NULL) V8::FatalProcessOutOfMemory("HashMap::Initialize");
+  if (map_ == NULL) {
+    V8::FatalProcessOutOfMemory("HashMap::Initialize");
+    return;
+  }
   capacity_ = capacity;
   Clear();
 }