[Bug 48832] New: Magic The Gathering Online does not start due to long file names

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48832

Bug ID: 48832
           Summary: Magic The Gathering Online does not start due to long
                    file names
           Product: Wine
           Version: 5.4
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 66749
  --> https://bugs.winehq.org/attachment.cgi?id=66749
increase OFS_MAXPATHNAME

Since the 2020-03-25 update of MTGO client, wine fails to start the program.
It is actually due to filenames which exceed OFS_MAXPATHNAME (128).
See debug at
https://github.com/pauleve/docker-mtgo/issues/79#issuecomment-605118041

Increasing OFS_MAXPATHNAME256 (see patch) fixed the issue and MTGO works again.