From c521e13444cd2b09347da20bd7ee2b9facff2133 Mon Sep 17 00:00:00 2001
From: Jonas Fonseca <fonseca@diku.dk>
Date: Fri, 23 Jan 2009 18:12:25 +0100
Subject: [PATCH] Fix kill_io() to only call kill(2) when pid is non-zero

---
 tig.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tig.c b/tig.c
index 010efc5..9e80d15 100644
--- a/tig.c
+++ b/tig.c
@@ -368,7 +368,7 @@ io_open(struct io *io, const char *name)
 static bool
 kill_io(struct io *io)
 {
-	return kill(io->pid, SIGKILL) != -1;
+	return io->pid == 0 || kill(io->pid, SIGKILL) != -1;
 }
 
 static bool
-- 
2.32.0.93.g670b81a890