From: Jacob Nevins <jacobn@chiark.greenend.org.uk>
Date: Sat, 22 Oct 2005 18:18:21 +0000 (+0000)
Subject: Fix segfault in Tents' printing.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=5e28f1a9719127373535d8d3104e3ccf4a32d34f;p=sgt-puzzles.git

Fix segfault in Tents' printing.

[originally from svn r6422]
---

diff --git a/tents.c b/tents.c
index 973c770..afed169 100644
--- a/tents.c
+++ b/tents.c
@@ -1976,7 +1976,7 @@ static void int_redraw(drawing *dr, game_drawstate *ds, game_state *oldstate,
              * marginally nicer not to have the drag effects
              * flickering on and off disconcertingly.
              */
-            if (ui->drag_button >= 0)
+            if (ui && ui->drag_button >= 0)
                 v = drag_xform(ui, x, y, v);
 
             if (flashing && (v == TREE || v == TENT))