From 0a03e38bc37cdbd54de75691fb9ee9f236ef46c7 Mon Sep 17 00:00:00 2001
From: Johannes Löthberg <johannes@kyriasis.com>
Date: Mon, 16 Feb 2015 21:50:35 +0100
Subject: Print error and exit when can't open display

---
 src/yawa.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/yawa.c b/src/yawa.c
index ac52c00..ff68732 100644
--- a/src/yawa.c
+++ b/src/yawa.c
@@ -305,6 +305,10 @@ main(signed argc, char **argv)
 	Pixmap pixmap;
 	Imlib_Color_Modifier modifier = NULL;
 	_display = XOpenDisplay(NULL);
+	if (!_display) {
+		fprintf(stderr, "X display could not be opened\n");
+		exit(1);
+	}
 
 	for (screen = 0; screen < ScreenCount(_display); screen++) {
 		display = XOpenDisplay(NULL);
-- 
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