Music: Fix UI is not showing the correct song being played.

When clicking repeat button that call setNextDataSource() immediately.
But this function is called just. This cause setNextDataSource() failed.
Therefore, before the first call to interrupt, to ensure that
this time the call was successful.

Change-Id: I0e56a817a1cc1507023a10d2f87237995c1e6c68
CRs-Fixed:  983440
1 file changed