[Bug 42625] Flushing file (int 0x21, ah=0x68) fails with access denied error in 16-bit code

https://bugs.winehq.org/show_bug.cgi?id=42625

Sebastian Lackner  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
    Regression SHA1|                            |f7d40d45da7a1bc0accd58bca6d
                   |                            |6da4e34861937
          Component|comdlg32                    |-unknown
             Status|NEEDINFO                    |NEW
            Summary|fixme:commdlg:GetOpenFileNa |Flushing file (int 0x21,
                   |me16 custom hook 0x17a7053e |ah=0x68) fails with access
                   |no longer supported         |denied error in 16-bit code
                 CC|                            |[e-mail]

--- Comment #8 from Sebastian Lackner  ---
Bisecting reveals that the real issue is something different.

--- snip ---
commit f7d40d45da7a1bc0accd58bca6d6da4e34861937
Author: Paul Gofman 
Date:   Wed Mar 1 14:05:54 2017 +0300

ntdll: NtFlushBuffersFile should fail if the file handle has no write
access.

Signed-off-by: Paul Gofman 
    Signed-off-by: Alexandre Julliard 
--- snip ---

I've sent a patch.