(Concept patch) Simplify WTF::HashTable::add() return value for size and performance

Source/bindings/v8/NPV8Object.cpp

Index: Source/bindings/v8/NPV8Object.cpp
diff --git a/Source/bindings/v8/NPV8Object.cpp b/Source/bindings/v8/NPV8Object.cpp
index 99e5e0c2cc3957f9025d0bf3976b4d59e5e12aea..ad23b6323671f0de77522b3e1fc86f7dfb92468c 100644
--- a/Source/bindings/v8/NPV8Object.cpp
+++ b/Source/bindings/v8/NPV8Object.cpp
@@ -141,10 +141,10 @@ NPObject* npCreateV8ScriptObject(NPP npp, v8::Handle<v8::Object> object, DOMWind
                     return reinterpret_cast<NPObject*>(v8npObject);
                 }
             }
+            objectVector = &iter->value;
         } else {
-            iter = v8NPObjectMap->set(v8ObjectHash, V8NPObjectVector()).iterator;
+            objectVector = &v8NPObjectMap->set(v8ObjectHash, V8NPObjectVector()).iterator->value;
         }
-        objectVector = &iter->value;
     }
 
     V8NPObject* v8npObject = reinterpret_cast<V8NPObject*>(_NPN_CreateObject(npp, &V8NPObjectClass));