From ac54dee9bbd33e71910fed8d5f8ddb1cde9b9a35 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicm@openbsd.org>
Date: Mon, 3 Aug 2009 15:30:16 +0000
Subject: [PATCH] Don't try to free old string values (and crash) when they are
 overridden unless they were actually found in the source terminal
 description. Reported by jmc.

---
 tty-term.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tty-term.c b/tty-term.c
index 2813be61..c96bdb12 100644
--- a/tty-term.c
+++ b/tty-term.c
@@ -196,7 +196,8 @@ tty_term_override(struct tty_term *term, const char *overrides)
 				case TTYCODE_NONE:
 					break;
 				case TTYCODE_STRING:
-					xfree(code->value.string);
+					if (code->type == TTYCODE_STRING)
+						xfree(code->value.string);
 					code->value.string = xstrdup(val);
 					code->type = ent->type;
 					break;