[FFmpeg-cvslog] avcodec/ansi: Fix frame memleak

[Michael Niedermayer]

ffmpeg | branch: release/2.8 | Michael Niedermayer <michael at niedermayer.cc> | Mon May 29 14:07:33 2017 +0200| [8d1cd5fa08dde7cc825782f33708c115877ec3f5] | committer: Michael Niedermayer

avcodec/ansi: Fix frame memleak

Fixes: 1892/clusterfuzz-testcase-minimized-4519341733183488

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit e091b9b3c7859030f2896ca2ae96faa3afc694a1)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8d1cd5fa08dde7cc825782f33708c115877ec3f5
---

 libavcodec/ansi.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/libavcodec/ansi.c b/libavcodec/ansi.c
index 98ea9e3d2a..31405b4a99 100644
--- a/libavcodec/ansi.c
+++ b/libavcodec/ansi.c
@@ -80,10 +80,6 @@ static av_cold int decode_init(AVCodecContext *avctx)
     AnsiContext *s = avctx->priv_data;
     avctx->pix_fmt = AV_PIX_FMT_PAL8;
 
-    s->frame = av_frame_alloc();
-    if (!s->frame)
-        return AVERROR(ENOMEM);
-
     /* defaults */
     s->font        = avpriv_vga16_font;
     s->font_height = 16;
@@ -98,6 +94,11 @@ static av_cold int decode_init(AVCodecContext *avctx)
         av_log(avctx, AV_LOG_ERROR, "Invalid dimensions %d %d\n", avctx->width, avctx->height);
         return AVERROR(EINVAL);
     }
+
+    s->frame = av_frame_alloc();
+    if (!s->frame)
+        return AVERROR(ENOMEM);
+
     return 0;
 }