From: Anton Khirnov <anton@khirnov.net>
Date: Mon, 18 Mar 2013 20:31:54 +0000 (+0100)
Subject: vf_lut: make config_props work properly when called multiple times.
X-Git-Tag: android-x86-4.4-r1~364^2~1032
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=b06848f4deccb998f019eadc9a72e595bb5db4a9;p=android-x86%2Fexternal-ffmpeg.git

vf_lut: make config_props work properly when called multiple times.

Do not leak the expressions.
---

diff --git a/libavfilter/vf_lut.c b/libavfilter/vf_lut.c
index 263bd537d2..348ef32326 100644
--- a/libavfilter/vf_lut.c
+++ b/libavfilter/vf_lut.c
@@ -245,6 +245,8 @@ static int config_props(AVFilterLink *inlink)
         double res;
 
         /* create the parsed expression */
+        av_expr_free(s->comp_expr[comp]);
+        s->comp_expr[comp] = NULL;
         ret = av_expr_parse(&s->comp_expr[comp], s->comp_expr_str[comp],
                             var_names, funcs1_names, funcs1, NULL, NULL, 0, ctx);
         if (ret < 0) {