From 20555fcb3646d789206ede9a95881fed75fbc0b9 Mon Sep 17 00:00:00 2001
From: James Booth <boothj5@gmail.com>
Date: Thu, 30 Apr 2015 21:27:44 +0100
Subject: [PATCH] Added assert to ui_switch_win

---
 src/ui/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/ui/core.c b/src/ui/core.c
index 59144223..d4bac9b3 100644
--- a/src/ui/core.c
+++ b/src/ui/core.c
@@ -868,6 +868,7 @@ ui_win_has_unsaved_form(int num)
 gboolean
 ui_switch_win(ProfWin *win)
 {
+    assert(win != NULL);
     int num = wins_get_num(win);
     return ui_switch_win_num(num);
 }