It should be replaced with strscpy, which differs in returned value in case of error. The current code doesn't check the returned value, so replacing strlcpy with strscpy in nf_conntrack_rtsp.c "just works", but it's as safe code as before.
Adrien
OK, so strlcpy got removed from Linux kernel:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=57f22c8dab6b266ae36b89b073a4a33dea71e762
