From 580dccd5c41d1b3ad41a350062186e694e22d9b6 Mon Sep 17 00:00:00 2001
From: reimar <reimar@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Sun, 7 Jan 2007 16:07:45 +0000
Subject: [PATCH] Avoid invalid memory access in ass_process_subtitle for empty
 subtitles with sub->lines <= 0

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@21853 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 libass/ass_mp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libass/ass_mp.c b/libass/ass_mp.c
index 5f0234a7e3..b572824e01 100644
--- a/libass/ass_mp.c
+++ b/libass/ass_mp.c
@@ -175,7 +175,7 @@ int ass_process_subtitle(ass_track_t* track, subtitle* sub)
 	for (j = 0; j < sub->lines; ++j)
 		p += snprintf(p, end - p, "%s\\N", sub->text[j]);
 
-	p-=2; // remove last ' '
+	if (sub->lines > 0) p-=2; // remove last "\N"
 	*p = 0;
 
 	if (check_duplicate_plaintext_event(track)) {