git: f7459ca1e768 - stable/13 - pfil: don't leak pfil_head_t on interface detach

From: Gleb Smirnoff <glebius_at_FreeBSD.org>
Date: Tue, 09 Jan 2024 00:32:34 UTC 
The branch stable/13 has been updated by glebius:

URL: https://cgit.FreeBSD.org/src/commit/?id=f7459ca1e768d76f6abe640f7dbcdc8f1aac0edb

commit f7459ca1e768d76f6abe640f7dbcdc8f1aac0edb
Author:     Gleb Smirnoff <glebius@FreeBSD.org>
AuthorDate: 2023-12-21 18:53:49 +0000
Commit:     Gleb Smirnoff <glebius@FreeBSD.org>
CommitDate: 2024-01-09 00:31:38 +0000

    pfil: don't leak pfil_head_t on interface detach
    
    PR:             256714
    Submitted by:   jcaplan@blackberry.com
    
    (cherry picked from commit c1c55da49fd55c01771f8cf1f7255a37b79735d7)
---
 sys/net/pfil.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/net/pfil.c b/sys/net/pfil.c
index 33b6be9fdade..f23702d2d905 100644
--- a/sys/net/pfil.c
+++ b/sys/net/pfil.c
@@ -251,6 +251,7 @@ pfil_head_unregister(pfil_head_t ph)
 		free(link, M_PFIL);
 	}
 	PFIL_UNLOCK();
+	free(ph, M_PFIL);
 }
 
 pfil_hook_t