Merge "Decoder: Update check for increment u2_cur_slice_num" into oc-mr1-dev am: 6b338befbc am: 6ddeb05426

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libavc/+/14460944

Change-Id: Id3844c9c5eb2c20ad2db75981bb19ff58151be47