Bug 1204725 - IonMonkey: Check result when copying frame iter data, r=nbp

js/src/vm/Stack.cpp

@@ -752,6 +752,9 @@ FrameIter::Data*
 FrameIter::copyData() const
 {
     Data* data = data_.cx_->new_<Data>(data_);
+    if (!data)
+        return nullptr;
+
     MOZ_ASSERT(data_.state_ != ASMJS);
     if (data && data_.jitFrames_.isIonScripted())
         data->ionInlineFrameNo_ = ionInlineFrames_.frameNo();