Do not leak the expressions.
---
 libavfilter/vf_pixdesctest.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/libavfilter/vf_pixdesctest.c b/libavfilter/vf_pixdesctest.c
index 65f7ece..223461b 100644
--- a/libavfilter/vf_pixdesctest.c
+++ b/libavfilter/vf_pixdesctest.c
@@ -46,6 +46,7 @@ static int config_props(AVFilterLink *inlink)
 
     priv->pix_desc = av_pix_fmt_desc_get(inlink->format);
 
+    av_freep(&priv->line);
     if (!(priv->line = av_malloc(sizeof(*priv->line) * inlink->w)))
         return AVERROR(ENOMEM);
 
-- 
1.7.10.4

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