[automerger skipped] libopus: Ignore integer overflows in NSQ_del_dec.c and NSQ.c am: 9435a97f8e -s ours am: 862fc2aa24 am: 4575ee3590 am: 7cf3011b7b

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

Change-Id: Ic39c2091f19b344b6537990d0a055b34b0df79fc