[FFmpeg-cvslog] nutdec: fix memleaks on error in nut_read_header

[Andreas Cadhalpun]

ffmpeg | branch: release/2.6 | Andreas Cadhalpun <andreas.cadhalpun at googlemail.com> | Tue Apr 28 20:58:21 2015 +0200| [2523bdcd670260c41bd7af14fb00f055f1d01bcd] | committer: Andreas Cadhalpun

nutdec: fix memleaks on error in nut_read_header

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 361702660d2c37a63b7d6381d39e1e1de8405260)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2523bdcd670260c41bd7af14fb00f055f1d01bcd
---

 libavformat/nutdec.c |   18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/libavformat/nutdec.c b/libavformat/nutdec.c
index d0c5635..dc17228 100644
--- a/libavformat/nutdec.c
+++ b/libavformat/nutdec.c
@@ -745,12 +745,14 @@ fail:
     return ret;
 }
 
+static int nut_read_close(AVFormatContext *s);
+
 static int nut_read_header(AVFormatContext *s)
 {
     NUTContext *nut = s->priv_data;
     AVIOContext *bc = s->pb;
     int64_t pos;
-    int initialized_stream_count;
+    int initialized_stream_count, ret = 0;
 
     nut->avf = s;
 
@@ -760,7 +762,8 @@ static int nut_read_header(AVFormatContext *s)
         pos = find_startcode(bc, MAIN_STARTCODE, pos) + 1;
         if (pos < 0 + 1) {
             av_log(s, AV_LOG_ERROR, "No main startcode found.\n");
-            return AVERROR_INVALIDDATA;
+            ret = AVERROR_INVALIDDATA;
+            goto end;
         }
     } while (decode_main_header(nut) < 0);
 
@@ -770,7 +773,8 @@ static int nut_read_header(AVFormatContext *s)
         pos = find_startcode(bc, STREAM_STARTCODE, pos) + 1;
         if (pos < 0 + 1) {
             av_log(s, AV_LOG_ERROR, "Not all stream headers found.\n");
-            return AVERROR_INVALIDDATA;
+            ret = AVERROR_INVALIDDATA;
+            goto end;
         }
         if (decode_stream_header(nut) >= 0)
             initialized_stream_count++;
@@ -784,7 +788,8 @@ static int nut_read_header(AVFormatContext *s)
 
         if (startcode == 0) {
             av_log(s, AV_LOG_ERROR, "EOF before video frames\n");
-            return AVERROR_INVALIDDATA;
+            ret = AVERROR_INVALIDDATA;
+            goto end;
         } else if (startcode == SYNCPOINT_STARTCODE) {
             nut->next_startcode = startcode;
             break;
@@ -806,7 +811,10 @@ static int nut_read_header(AVFormatContext *s)
 
     ff_metadata_conv_ctx(s, NULL, ff_nut_metadata_conv);
 
-    return 0;
+end:
+    if (ret < 0)
+        nut_read_close(s);
+    return FFMIN(ret, 0);
 }
 
 static int read_sm_data(AVFormatContext *s, AVIOContext *bc, AVPacket *pkt, int is_meta, int64_t maxpos)