[automerger skipped] libFLAC/bitreader.c: Fix out-of-bounds read am: 029048f823 -s ours am: ac368b02f2

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/flac/+/12262330

Change-Id: Id5a8be9910fb130f073a1e787c8d9b9ade388927