Merge "libopus: Ignore integer overflows in NSQ_del_dec.c and NSQ.c" am: d5875d2a08 am: 1b1417f64e

Original change: https://android-review.googlesource.com/c/platform/external/libopus/+/1611915

Change-Id: I3e9c35ffcb2ea38c3ddb0ac5f988c72aaccf98d8