Removed some mutex calls to avoid dead lock when playing back MPD Removed unused variable
Removed some mutex calls to avoid dead lock when playing back MPD
Removed unused variable

DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf