vc1: use ff_parse_close

It works as long as ParseContext is the first member of the private struct
Signed-off-by: Diego Biurrun <diego@biurrun.de>

libavcodec/vc1_parser.c

@@ -196,6 +196,6 @@ AVCodecParser ff_vc1_parser = {
     .priv_data_size = sizeof(VC1ParseContext),
     .parser_init    = vc1_parse_init,
     .parser_parse   = vc1_parse,
-    .parser_close   = ff_parse1_close,
+    .parser_close   = ff_parse_close,
     .split          = vc1_split,
 };