From http://www.jwz.org/xscreensaver/xscreensaver-5.36.tar.gz

[xscreensaver] / hacks / decayscreen.c

diff --git a/hacks/decayscreen.c b/hacks/decayscreen.c
index f0d4e95c6b2b4da8ca000f46f115b36628b47c2c..832b7ca7d3a71b72dead0b42db8623add01f7461 100644 (file)
--- a/hacks/decayscreen.c
+++ b/hacks/decayscreen.c
@@ -330,6 +330,7 @@ decayscreen_reshape (Display *dpy, Window window, void *closure,
                  unsigned int w, unsigned int h)
 {
   struct state *st = (struct state *) closure;
+  if (! st->saved) return; /* Image might not be loaded yet */
   XClearWindow (st->dpy, st->window);
   XCopyArea (st->dpy, st->saved, st->window, st->gc,
              0, 0, st->saved_w, st->saved_h,