Do not set back to AudioManager.MODE_NORMAL in SipAudioCall.
Do not set back to AudioManager.MODE_NORMAL in SipAudioCall.

Change-Id: I8f68e01e5f8c73bb8afd44312cbfadb55aab4330

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