Merge 86106

Source/JavaScriptCore/wtf/FastMalloc.cpp

 // Copyright (c) 2005, 2007, Google Inc.
 // All rights reserved.
 // Copyright (C) 2005, 2006, 2007, 2008, 2009, 2011 Apple Inc. All rights reserved.
 // 
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 // 
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
@@ skipping 165 matching lines @@
 
 void* fastZeroedMalloc(size_t n) 
 {
     void* result = fastMalloc(n);
     memset(result, 0, n);
     return result;
 }
 
 char* fastStrDup(const char* src)
 {
-    int len = strlen(src) + 1;
+    size_t len = strlen(src) + 1;
     char* dup = static_cast<char*>(fastMalloc(len));
-
-    if (dup)
-        memcpy(dup, src, len);
-
+    memcpy(dup, src, len);
     return dup;
 }
-    
+
 TryMallocReturnValue tryFastZeroedMalloc(size_t n) 
 {
     void* result;
     if (!tryFastMalloc(n).getValue(result))
         return 0;
     memset(result, 0, n);
     return result;
 }
 
 } // namespace WTF
@@ skipping 4415 matching lines @@
 {
     static FastMallocZone zone(pageheap, &thread_heaps, static_cast<TCMalloc_Central_FreeListPadded*>(central_cache), &span_allocator, &threadheap_allocator);
 }
 
 #endif // OS(DARWIN)
 
 } // namespace WTF
 #endif // WTF_CHANGES
 
 #endif // FORCE_SYSTEM_MALLOC