Optimization of HashTraits<RefPtr<P> >::emptyValue()

Source/wtf/HashTraits.h

Index: Source/wtf/HashTraits.h
diff --git a/Source/wtf/HashTraits.h b/Source/wtf/HashTraits.h
index 329c18b394f2792d3a51c1ec934784df8dbbf4ff..2be33c29db1f7ad702c7dc4a04e65a6a3ad5d4b5 100644
--- a/Source/wtf/HashTraits.h
+++ b/Source/wtf/HashTraits.h
@@ -138,17 +138,14 @@ namespace WTF {
     };
 
     template<typename P> struct HashTraits<RefPtr<P> > : SimpleClassHashTraits<RefPtr<P> > {
-        static RefPtr<P>& emptyValue()
-        {
-            static RefPtr<P>& null = *(new RefPtr<P>);
-            return null;
-        }
+        static P* emptyValue() { return 0; }
 
         typedef PassRefPtr<P> PassInType;
         static void store(PassRefPtr<P> value, RefPtr<P>& storage) { storage = value; }
 
         typedef PassRefPtr<P> PassOutType;
         static PassRefPtr<P> passOut(RefPtr<P>& value) { return value.release(); }
+        static PassRefPtr<P> passOut(P* value) { return value; }
 
         typedef P* PeekType;
         static PeekType peek(const RefPtr<P>& value) { return value.get(); }