Fix crash when receiving avdtp close command
Fix crash when receiving avdtp close command

If there are pending start or suspend requests they should all fail since
once close indication return the state will be changed to closing and
remote stack can then disconnect cleanly.

This also follow what specs says about connection release:

"When the Upper Layer has completed releasing all resources allocated to
the stream, an AVDTP_CLOSE_RSP is sent back to the INT."

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