From 295fec2b46be2ee492b1fbe7a51d95de8ddce5ba Mon Sep 17 00:00:00 2001
From: Jeremy Allison <jra@samba.org>
Date: Thu, 1 Oct 2009 16:18:33 -0700
Subject: [PATCH] NULL is not a valid event context. Jeremy.

---
 lib/tevent/tevent_signal.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/tevent/tevent_signal.c b/lib/tevent/tevent_signal.c
index d3325b67ac0..ab170a66cf7 100644
--- a/lib/tevent/tevent_signal.c
+++ b/lib/tevent/tevent_signal.c
@@ -92,7 +92,7 @@ static void tevent_common_signal_handler(int signum)
 
 	/* Write to each unique event context. */
 	for (sl = sig_state->sig_handlers[signum]; sl; sl = sl->next) {
-		if (sl->se->event_ctx != ev) {
+		if (sl->se->event_ctx && sl->se->event_ctx != ev) {
 			ev = sl->se->event_ctx;
 			/* doesn't matter if this pipe overflows */
 			res = write(ev->pipe_fds[1], &c, 1);