Bug 558540 - about:sessionrestore asserts because of the wrong wrapper types. r=jst

--HG--
extra : rebase_source : dcf0256b25620953fd3bfefacc56814bbb2d519c

js/src/xpconnect/src/XPCSafeJSObjectWrapper.cpp

@@ -843,7 +843,7 @@ XPC_SJOW_Call(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
     }
   }
 
-  return WrapJSValue(cx, obj, *rval, rval);
+  return WrapJSValue(cx, safeObj, *rval, rval);
 }
 
 static JSBool