[FFmpeg-cvslog] matroskaenc: Make sure the seekhead struct is freed even on seek failure

[Martin Storsjö]

ffmpeg | branch: master | Martin Storsjö <martin at martin.st> | Mon Nov  7 21:06:01 2011 +0200| [44729bc0204fd8bdc29c234fc663229e44420b09] | committer: Martin Storsjö

matroskaenc: Make sure the seekhead struct is freed even on seek failure

The caller expects the seekhead struct to be freed when calling
matroska_write_seekhead. Currently, the structure is leaked if the
seek fails.

Signed-off-by: Martin Storsjö <martin at martin.st>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=44729bc0204fd8bdc29c234fc663229e44420b09
---

 libavformat/matroskaenc.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 5edd2be..0667947 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -317,9 +317,12 @@ static int64_t mkv_write_seekhead(AVIOContext *pb, mkv_seekhead *seekhead)
 
     currentpos = avio_tell(pb);
 
-    if (seekhead->reserved_size > 0)
-        if (avio_seek(pb, seekhead->filepos, SEEK_SET) < 0)
-            return -1;
+    if (seekhead->reserved_size > 0) {
+        if (avio_seek(pb, seekhead->filepos, SEEK_SET) < 0) {
+            currentpos = -1;
+            goto fail;
+        }
+    }
 
     metaseek = start_ebml_master(pb, MATROSKA_ID_SEEKHEAD, seekhead->reserved_size);
     for (i = 0; i < seekhead->num_entries; i++) {
@@ -343,6 +346,7 @@ static int64_t mkv_write_seekhead(AVIOContext *pb, mkv_seekhead *seekhead)
 
         currentpos = seekhead->filepos;
     }
+fail:
     av_free(seekhead->entries);
     av_free(seekhead);