Int 21 Fn E5 O - Novell Netware - Update File Size (fcb) [N]

AH = E5h
DS:DX -> FCB (see #1034 at AH=0Fh)

Return: AL = (unreliable) return code

Notes: this function was added in NetWare 4.0, but was removed some time prior
to Advanced NetWare 2.15, and is no longer listed in current Novell
documentation
on success, NetWare sets AL to zero; on errors it restores AL