movenc: Use LIBAVFORMAT_IDENT instead of LIBAVCODEC_IDENT

The muxer seems to have had one seemingly accidental use of
LIBAVCODEC_IDENT, while LIBAVFORMAT_IDENT probably is the
relevant one (which is used multiple times in the same file).

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

libavformat/movenc.c

@@ -4108,7 +4108,7 @@ static int mov_write_uuidusmt_tag(AVIOContext *pb, AVFormatContext *s)
         avio_wb16(pb, 0x021C);               /* data */
 
         if (!(s->flags & AVFMT_FLAG_BITEXACT))
-            mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT,      "eng", 0x04);
+            mov_write_psp_udta_tag(pb, LIBAVFORMAT_IDENT,      "eng", 0x04);
         mov_write_psp_udta_tag(pb, title->value,          "eng", 0x01);
         mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);