Restore legacy soft-aac decoder behaviour. Substitute silence on decode error.
Restore legacy soft-aac decoder behaviour. Substitute silence on decode error.

Change-Id: I680ccaabef32b1319819f723260cb3789585f09e
related-to-bug: 4579486

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base