libOpus: fix OOB read in ssse4 correlation kernel am: a6a69736ba am: cebdfe545a

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libopus/+/15935007

Change-Id: I99f5f92ec2244b97089e10820c3a34b7d1e0ee13