Fix GCMole warning.

R=danno@chromium.org

Review URL: http://codereview.chromium.org/7508020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8821 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/runtime.cc

@@ -666,7 +666,8 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_WeakMapSet) {
   CONVERT_ARG_CHECKED(JSObject, key, 1);
   Handle<Object> value(args[2]);
   Handle<ObjectHashTable> table(weakmap->table());
-  weakmap->set_table(*PutIntoObjectHashTable(table, key, value));
+  Handle<ObjectHashTable> new_table = PutIntoObjectHashTable(table, key, value);
+  weakmap->set_table(*new_table);
   return *value;
 }