From bbf372e1457a1cde5de8df8bdf930560bc9c9631 Mon Sep 17 00:00:00 2001
From: Nicolas George <nicolas.george@normalesup.org>
Date: Thu, 12 Jan 2012 19:18:13 +0100
Subject: [PATCH] overlay: do not leak x/y expressions.

---
 libavfilter/vf_overlay.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavfilter/vf_overlay.c b/libavfilter/vf_overlay.c
index 062783ea56..38e8644f61 100644
--- a/libavfilter/vf_overlay.c
+++ b/libavfilter/vf_overlay.c
@@ -115,12 +115,14 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
     av_opt_set_defaults(over);
 
     if (expr = av_strtok(args1, ":", &bufptr)) {
+        av_free(over->x_expr);
         if (!(over->x_expr = av_strdup(expr))) {
             ret = AVERROR(ENOMEM);
             goto end;
         }
     }
     if (expr = av_strtok(NULL, ":", &bufptr)) {
+        av_free(over->y_expr);
         if (!(over->y_expr = av_strdup(expr))) {
             ret = AVERROR(ENOMEM);
             goto end;