commit 6fad4c49f17f154b49846d379e347897b747f793
from: Anselm R Garbe <garbeam@gmail.com>
date: Fri Jul 18 19:18:45 2008 UTC

potential crash fix if xinerama behaves broken, though I doubt it

commit - 78f0f8595fbd51f56eb450f50282870e95dcf7f8
commit + 6fad4c49f17f154b49846d379e347897b747f793
blob - 34bcd99cd2127831a3445a0429d0154c12aa6ce4
blob + 52bb9f1022a71d13a869ecaa3f00bfc6dac38df8
--- dwm.c
+++ dwm.c
@@ -1562,8 +1562,7 @@ updategeom(void) {
 	XineramaScreenInfo *info = NULL;
 
 	/* window area geometry */
-	if(XineramaIsActive(dpy)) {
-		info = XineramaQueryScreens(dpy, &n);
+	if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) { 
 		if(n > 1) {
 			int di, x, y;
 			unsigned int dui;