Merge "Decoder: Fix integer overflow when scaling motion vectors" am: e76f029dc4 am: f68a3c1b25 am: 5bac058ee3

Original change: https://android-review.googlesource.com/c/platform/external/libavc/+/1432934

Change-Id: I70ff57d9eda75ff72ffb480a379e9a1cfdf1a353