Fix android_media_AudioSystem_getMasterMute return type.
Fix android_media_AudioSystem_getMasterMute return type.

Caused FPU stack overflow on x86.

Bug: 18023418
Change-Id: I0b8102cad5f5a883f615fa5dfa3017f56258a192

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