Index: sys/kern/uipc_syscalls.c
===================================================================
--- sys/kern/uipc_syscalls.c
+++ sys/kern/uipc_syscalls.c
@@ -678,7 +678,7 @@
 static int
 sendit(struct thread *td, int s, struct msghdr *mp, int flags)
 {
-	struct mbuf *control;
+	struct mbuf *control = NULL;
 	struct sockaddr *to;
 	int error;
 
@@ -730,6 +730,8 @@
 
 bad:
 	free(to, M_SONAME);
+	if (control) 
+		m_freem(control);
 	return (error);
 }