Fix uninitialized variable warning
Fix uninitialized variable warning

audio/unix.c: In function ‘client_cb’:
audio/unix.c:1078:20: error: ‘a2dp’ may be used uninitialized in this function
audio/unix.c:1154:20: error: ‘a2dp’ may be used uninitialized in this function
make[1]: *** [audio/unix.o] Error 1

mapfau/bluez,mapfau/bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,silent-snowman/bluez,ComputeCycles/bluez,ComputeCycles/bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,mapfau/bluez,mapfau/bluez,ComputeCycles/bluez,silent-snowman/bluez,ComputeCycles/bluez,pkarasev3/bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez