tremolo: Fix Index out of bounds in oggpack_look am: 8258a4bf67 am: 901337e035

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/tremolo/+/13163346

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I1a897f2a82fc3b1395df0706293014748ce6d3ac