Avoid signed integer overflow in pcmLimiter_Apply(). am: 76104a5431 am: b1dc10e5bc am: adf9fe784b am: 95f7178e49

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/aac/+/14386919

Change-Id: I5b67f200cca437d5e45d4e4b2a6c547af9078ea5