Update magic_number.dart

Author: ireun

pkgs/mime/lib/src/magic_number.dart

@@ -105,7 +105,7 @@ const List<MagicNumber> initialMagicNumbers = [
   MagicNumber('image/png', [0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A]),
   MagicNumber('image/x-canon-cr2', // Since CR2 is based on tiff, this MagicNumber needs to be above `image/tiff`
     [0x49, 0x49, 0x2A, 0x00, 0x10, 0x00, 0x00, 0x00, 0x43, 0x52, 0x02],
-    [0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF]),
+mask: [0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF]),
   MagicNumber('image/tiff', [0x49, 0x49, 0x2A, 0x00]),
   MagicNumber('image/tiff', [0x4D, 0x4D, 0x00, 0x2A]),
   MagicNumber('audio/aac', [0xFF, 0xF1]),