[PATCH] Fix kwin crashes on xrandr update on NX

[Timo Aaltonen]

https://bugs.freedesktop.org/show_bug.cgi?id=59795

Signed-off-by: Ritesh Khadgaray <khadgaray at gmail.com>
Reviewed-by: Peter Hutterer <peter.hutterer at who-t.net>
---
 src/Xrandr.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Xrandr.c b/src/Xrandr.c
index b1e97ec..9a56636 100644
--- a/src/Xrandr.c
+++ b/src/Xrandr.c
@@ -483,6 +483,10 @@ int XRRUpdateConfiguration(XEvent *event)
        scevent = (XRRScreenChangeNotifyEvent *) event;
        snum = XRRRootToScreen(dpy,
                               ((XRRScreenChangeNotifyEvent *) event)->root);
+	/* check for return value, fails on nx */
+	if (snum == -1 ) {
+		return 0;
+	}
        if (scevent->rotation & (RR_Rotate_90 | RR_Rotate_270)) {
                dpy->screens[snum].width   = scevent->height;
                dpy->screens[snum].height  = scevent->width;
-- 
1.7.10.4