Audioservice: Fix Theme engine support

A few more instances of mVolumePanel.postXXXX had to be enclosed in a
null pointer avoidance wrapper.

Change-Id: I60a0544b5a785417af1ea61e7322b06f2748876b

Conflicts:
	media/java/android/media/AudioService.java
AudioService : Fix NPE

Initialize mVolumePanel prior to registering the receiver,
since 4.3 now invokes the layoutDirection call on it.

Change-Id: I8d00f0886b603d52bc55cba5fd3ba1d86f7ea56c
Audioservice: Derp in "Fix Theme engine support" commit
Merge remote-tracking branch 'frameworksPA/jb43' into jb43