info.c (tagcompare): use a locale-insensitive toupper()
info.c (tagcompare): use a locale-insensitive toupper()

see: https://gitlab.xiph.org/xiph/vorbis/issues/2079

ShiftMediaProject/vorbis,ShiftMediaProject/vorbis,ShiftMediaProject/vorbis,ShiftMediaProject/vorbis,ShiftMediaProject/vorbis,ShiftMediaProject/vorbis