set pict_type to I type during init so parsers which dont set it get all i...

set pict_type to I type during init so parsers which dont set it get all i frames, fixes mp3 seeking


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@8528 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/parser.c

@@ -70,6 +70,7 @@ AVCodecParserContext *av_parser_init(int codec_id)
         }
     }
     s->fetch_timestamp=1;
+    s->pict_type = FF_I_TYPE;
     return s;
 }