don't call f_detach if the filter has alread removed the knote.. This

happens when a proc exits, but needs to inform the user that this has
happened..  This also means we can remove the check for detached from
proc and sig f_detach functions as this is doing in kqueue now...

MFC after:	5 days

1 files changed, 0 insertions, 3 deletions

diff --git a/sys/net/if.c b/sys/net/if.c
index dce37b9..1ba833e 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -219,9 +219,6 @@ filt_netdetach(struct knote *kn)
 {
 	struct knlist *klist = (struct knlist *)kn->kn_hook;
 
-	if (kn->kn_status & KN_DETACHED)
-		return;
-
 	knlist_remove(klist, kn, 0);
 }