From 300deba3be97e83c52c82e6294501b05b0dbfbb1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kristian=20H=C3=B8gsberg?= <krh@bitplanet.net>
Date: Tue, 3 Jan 2012 22:53:33 -0500
Subject: [PATCH] x11: Handle non-existing properties correctly

Don't try to read out ATOM or WINDOW values if there is no such property.
---
 src/xserver-launcher.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/xserver-launcher.c b/src/xserver-launcher.c
index 486e7642..a032c791 100644
--- a/src/xserver-launcher.c
+++ b/src/xserver-launcher.c
@@ -624,6 +624,11 @@ weston_wm_handle_map_notify(struct weston_wm *wm, xcb_generic_event_t *event)
 		if (!reply)
 			/* Bad window, typically */
 			continue;
+		if (reply->type == XCB_ATOM_NONE) {
+			/* No such property */
+			free(reply);
+			continue;
+		}
 
 		p = ((char *) window + props[i].offset);