Fix memory leak in sap plugin
Fix memory leak in sap plugin

Without this patch, when dropping RFCOMM channel to sap server, the
component's channel cleanup process doesn't release assigned GIOChannel
resources since conn->io is set to NULL before calling sap_conn_remove
(which would normally do the g_io_channel_unref).

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