[FFmpeg-devel] [PATCH V1 2/2] lavfi/avf_showspectrum: Fix the memory leak in error handle path

[Jun Zhao]

From: Jun Zhao <barryjzhao at tencent.com>

Fix the memory leak in error handle path.

Signed-off-by: Jun Zhao <barryjzhao at tencent.com>
---
 libavfilter/avf_showspectrum.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/libavfilter/avf_showspectrum.c b/libavfilter/avf_showspectrum.c
index d5785af..3a3ef7e 100644
--- a/libavfilter/avf_showspectrum.c
+++ b/libavfilter/avf_showspectrum.c
@@ -700,16 +700,15 @@ static int draw_legend(AVFilterContext *ctx, int samples)
 
     drawtext(s->outpicref, 2, outlink->h - 10, "CREATED BY LIBAVFILTER", 0);
     drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, outlink->h - 10, text, 0);
+    av_freep(&text);
     if (s->stop) {
-        char *text = av_asprintf("Zoom: %d Hz - %d Hz", s->start, s->stop);
+        text = av_asprintf("Zoom: %d Hz - %d Hz", s->start, s->stop);
         if (!text)
             return AVERROR(ENOMEM);
         drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, 3, text, 0);
         av_freep(&text);
     }
 
-    av_freep(&text);
-
     dst = s->outpicref->data[0] + (s->start_y - 1) * s->outpicref->linesize[0] + s->start_x - 1;
     for (x = 0; x < s->w + 1; x++)
         dst[x] = 200;
-- 
1.7.1