[Bug 19870] New: crash on EnumDisplayMonitors() callback return

http://bugs.winehq.org/show_bug.cgi?id=19870

Summary: crash on EnumDisplayMonitors() callback return
           Product: Wine
           Version: 1.1.28
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=23301)
 --> (http://bugs.winehq.org/attachment.cgi?id=23301)
App to crash after EnumDisplayMonitors callback. Winedebug logs for `-g -O0`
and `-O2`

Wine crashes on returning from EnumDisplayMonitors()'s callback.
Callback called ok, params passed ok, but after callback returns, wine crashes.

Logs attached for wine compiled with `-O2` flags, and with `-g -O0`
Simple application that reproduce crash attached.