From http://www.jwz.org/xscreensaver/xscreensaver-5.35.tar.gz

[xscreensaver] / hacks / thornbird.c

diff --git a/hacks/thornbird.c b/hacks/thornbird.c
index cb5541de2e99b9bc12e3c697f558c7971a03e997..c2edeb7c90f2d21ae0f5dfa84378ae733cd8e528 100644 (file)
--- a/hacks/thornbird.c
+++ b/hacks/thornbird.c
@@ -222,6 +222,7 @@ draw_thornbird(ModeInfo * mi)
 
        MI_IS_DRAWN(mi) = True;
 
+    if (MI_COUNT(mi) < 1) MI_COUNT(mi) = 1;
        if (hp->pointBuffer[erase] == NULL) {
                if ((hp->pointBuffer[erase] = (XPoint *) malloc(MI_COUNT(mi) *
                                sizeof (XPoint))) == NULL) {