Check if BT is disabled or not when sending audio state.

When BT is turning off we need to send the audio state intent.
We were not doing this since the state was turning off.

The check was added to prevent misuse of public APIs, since
these functions are used internally, its not a problem.

Change-Id: I9834cbff741722bf99c2875fa65c0617b7b4807b
1 file changed