Windows that are not open can now be closed
diff --git a/contiki/ctk/ctk.c b/contiki/ctk/ctk.c
index 23738b5..9ee32eb 100644
--- a/contiki/ctk/ctk.c
+++ b/contiki/ctk/ctk.c
@@ -32,7 +32,7 @@
*
* This file is part of the "ctk" console GUI toolkit for cc65
*
- * $Id: ctk.c,v 1.5 2003/04/05 12:22:35 adamdunkels Exp $
+ * $Id: ctk.c,v 1.6 2003/04/08 19:28:15 adamdunkels Exp $
*
*/
@@ -275,7 +275,13 @@
/* Otherwise we step through the list until we find the window
before the one to be closed. We then redirect its ->next
pointer and its ->next->prev. */
- for(w2 = windows; w2->next != w; w2 = w2->next);
+ for(w2 = windows; w2 != NULL && w2->next != w; w2 = w2->next);
+
+ if(w2 == NULL) {
+ /* The window wasn't open, so there is nothing more for us to
+ do. */
+ return;
+ }
if(w->next != NULL) {
w->next->prev = w->prev;