[Bug 53934] __unDName fails to demangle a name

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53934

Zeb Figura  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|__unDName bug               |__unDName fails to demangle
                   |                            |a name
            Product|WineHQ Bugzilla             |Wine
          Component|bugzilla-unknown            |msvcrt
                 OS|Windows                     |Linux