Bug 845478 - Part 5: Use JS::CallArgs instead of vp in js/src/. r=evilpie

js/src/jsweakmap.cpp

@@ -402,11 +402,12 @@ WeakMap_finalize(FreeOp *fop, JSObject *obj)
 static bool
 WeakMap_construct(JSContext *cx, unsigned argc, Value *vp)
 {
+    CallArgs args = CallArgsFromVp(argc, vp);
     JSObject *obj = NewBuiltinClassInstance(cx, &WeakMapObject::class_);
     if (!obj)
         return false;
 
-    vp->setObject(*obj);
+    args.rval().setObject(*obj);
     return true;
 }