Description: Add check for NULL pointer
Author: Jörg Frings-Fürst <debian@jff-webhsoting.net>
Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=700253
Forwarded: http://www.freelists.org/post/argyllcms/dispwin-bad-command-line-option-makes-dispwin-segfault
Reviewed-by: 
Last-Update: 2015-08-23
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
Index: trunk/spectro/dispwin.c
===================================================================
--- trunk.orig/spectro/dispwin.c
+++ trunk/spectro/dispwin.c
@@ -6281,6 +6281,7 @@ main(int argc, char *argv[]) {
 
 			/* Display number */
 			else if (argv[fa][1] == 'd') {
+				if(na == NULL)  usage(0, "-d parameter missing");
 				if (strncmp(na,"web",3) == 0
 				 || strncmp(na,"WEB",3) == 0) {
 					webdisp = 8080;