[automerger skipped] libopus: Ignore integer overflows in NSQ_del_dec.c and NSQ.c am: 9435a97f8e -s ours am: 862fc2aa24

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libopus/+/14328001

Change-Id: I6a0f956ee0d4e3879d5231325aab6dd2d4d128eb