[Bug 39040] Office 2010 applications enter installation configuration steps then exit

https://bugs.winehq.org/show_bug.cgi?id=39040

--- Comment #3 from Sebastian Lackner  ---
Confirming. I would guess it has to do with a missing validation of
loadcfg->Size. An additional check like loadcfg_size == loadcfg->Size seems to
fix it, but difficult to say if its correct. I fear sooner or later we'll need
test for those security cookies. :/