Refactor ce7604e -- only check result of remove(), nothing else.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
debug.c: Cleanup and fix missing break in switch.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
pim_proto.c:receive_pim_register_stop() - Simplify code to fix Coverity CID #71270

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>