From bd2c9e810cdca63ea05b047d0ca761c85ce82694 Mon Sep 17 00:00:00 2001
From: Tim Edwards <tim@opencircuitdesign.com>
Date: Wed, 10 Mar 2021 09:20:34 -0500
Subject: [PATCH] One more check on valid display which is known to be in the
 startup path.

---
 events.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/events.c b/events.c
index 1f846e6..80b8e4a 100644
--- a/events.c
+++ b/events.c
@@ -2399,6 +2399,9 @@ int getkeysignature(XKeyEvent *event)
    if (event->keycode == 0 && event->state == 0)
 	   return -1;
 #endif
+   /* XLookupString() will fail if the display is not valid */
+   if (dpy == NULL) return -1;
+
    XLookupString(event, _STR, 150, &keypressed, NULL);
 
    /* Ignore Shift, Control, Caps Lock, and Meta (Alt) keys 	*/
-- 
2.11.4.GIT