"file -i" command may display the mime type of gzip files as "application/octet-stream" instead of "application/x-gzip"

Issue

• The file -i command displays the mime type of a specific gzip file as application/octet-stream instead of application/x-gzip

  $ file -i filename
  filename: application/octet-stream; charset=binary
  

• The file command displays the file information as Sun disk label instead of gzip compressed data

  $ file filename
  filename: Sun disk label '\037\010\036QrU\323`\312\013X\254+j-r\227]Z\222d\021\235\375\242\032q\352q\322-\320y0\232\206e?\371\310\375\3353s\356.\351m\200\310\315s\317s\346|\263v:)!\2047\357 23643 alts/cyl, 6963 interleave, 25077 data cyls, 21069 alt cyls, 32750 heads/partition, 1617887563 blocks