From ee8b613c9a736edcffa1e2218bfe771fef146a5e Mon Sep 17 00:00:00 2001
From: Dima Krasner <dima@dimakrasner.com>
Date: Sat, 3 Dec 2022 12:06:29 +0200
Subject: [PATCH] fix null deref in sigchld() if Xwayland is disabled

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

diff --git a/dwl.c b/dwl.c
index 7ab649a..e02d98a 100644
--- a/dwl.c
+++ b/dwl.c
@@ -2564,7 +2564,7 @@ sigchld(int unused)
 	 * XWayland process
 	 */
 	while (!waitid(P_ALL, 0, &in, WEXITED|WNOHANG|WNOWAIT) && in.si_pid
-			&& in.si_pid != xwayland->server->pid)
+			&& (!xwayland || in.si_pid != xwayland->server->pid))
 		waitpid(in.si_pid, NULL, 0);
 }