Avoid signed integer overflow in pcmLimiter_Apply().

Bug: 186706541
Test: atest android.media.cts.DecoderTestAacFormat android.media.cts.DecoderTestXheAac android.media.cts.DecoderTestAacDrc
Change-Id: I89f5206053926cb2f8726e4bc1ffb9fc88371edb
(cherry picked from commit 5a83a8e5e1cafceba6bef7ac61e68a57cc93d786)
1 file changed