Ignore integer overflows in silk_burg_modified am: d11ac2a40b am: c11301b3c4 am: 11192f4c26

Original change: https://android-review.googlesource.com/c/platform/external/libopus/+/2229374

Change-Id: Iead34e324eda6c29bdebe1b0c959a989070e12dc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>