transport: Fix inconsistent transport state
transport: Fix inconsistent transport state

If a2dp_resume() fails, the transport state should not be modified. It
would otherwise enter an incosistent state where the transport will be
impossible to resume, since acquire() will see the transport in
TRANSPORT_STATE_REQUESTING state and will thus return
btd_error_not_authorized().

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