Close ogg stream upon error when using AV_EF_EXPLODE.

Without this there can be multiple memory leaks for unrecognized
ogg streams.
Signed-off-by: Dale Curtis <dalecurtis@chromium.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit bce8fc07)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/oggdec.c

@@ -708,8 +708,10 @@ static int ogg_read_header(AVFormatContext *s)
                    "Headers mismatch for stream %d: "
                    "expected %d received %d.\n",
                    i, os->codec->nb_header, os->nb_header);
-            if (s->error_recognition & AV_EF_EXPLODE)
+            if (s->error_recognition & AV_EF_EXPLODE) {
+                ogg_read_close(s);
                 return AVERROR_INVALIDDATA;
+            }
         }
         if (os->start_granule != OGG_NOGRANULE_VALUE)
             os->lastpts = s->streams[i]->start_time =