fix: sanitizer grunt on negative values implicitely converted to unsigned am:...

fix: sanitizer grunt on negative values implicitely converted to unsigned am: e817a25f am: 0499861a am: 4147837b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/1988846

Change-Id: I09be63649b42434e3a2da79f490d03bc3e930579