subscr: Remember if we need to call subscr_put_channel at the end.
tree0510710d616d55d3d78c158f3e98d88dcf1b9302
drwxr-xr-x - hlrsync
drwxr-xr-x - linux-kernel
drwxr-xr-x - openbsc
drwxr-xr-x - wireshark