vf_lut: make config_props work properly when called multiple times.

Do not leak the expressions.
12 years ago · b06848f4de
parent 1232a1647a
commit b06848f4de
1 changed files with 2 additions and 0 deletions
--- 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) {