[MSI] Fix regression CORE-14646

[MSI] Fix regression CORE-14646

Pressing Next-button in setup of "1C Enterprise (training version) 8.3.10.2252"
did not have any effect anymore. Setup could not be completed anymore.

The regression was introduced to ros by 0.4.8-dev-739-g
f8b992f2d31aaea06dd6a360ad19165d56c331dc
and was confirmed being a Wine-regression in
https://bugs.winehq.org/show_bug.cgi?id=45445

Thanks to Fabian Maurer for communicating to Wine and thanks to
Thomas Faber for regenerating cond.tab.c from the fixed source file cond.y
using BISON.

I also committed the same fix to 0.4.12-RC-32-g152ee20.