HashTraits<RefPtr<P> >::PeekType should be raw pointer for better performance

Source/core/loader/archive/ArchiveResourceCollection.cpp

Index: Source/core/loader/archive/ArchiveResourceCollection.cpp
diff --git a/Source/core/loader/archive/ArchiveResourceCollection.cpp b/Source/core/loader/archive/ArchiveResourceCollection.cpp
index 55baadb50a2a03d2ee4373ac6fd35b299ffde9fe..804aa1f39ee4b0b479e63295326e192566dac8c5 100644
--- a/Source/core/loader/archive/ArchiveResourceCollection.cpp
+++ b/Source/core/loader/archive/ArchiveResourceCollection.cpp
@@ -74,7 +74,7 @@ void ArchiveResourceCollection::addResource(PassRefPtr<ArchiveResource> resource
 
 ArchiveResource* ArchiveResourceCollection::archiveResourceForURL(const KURL& url)
 {
-    ArchiveResource* resource = m_subresources.get(url).get();
+    ArchiveResource* resource = m_subresources.get(url);
     if (!resource)
         return 0;