Crash when closing module display window with Qt 5.8

[gholmlund]

Using Qt 5.8 open and then close any module display window will crash BibleTime.

[gholmlund]

Fixed

[Castir]

Not Fixed. If I click to close one Bible or Personal commentary it has the same effect as File > Quit, Bibletime closes. Ctl-Alt-W does the same as does Ctl-W. Tried many times. I am on a Lenovo G580 converted from Windows 8 to Mageia 6 Linux running on UEFI. Several versions of Qt are in use from 4.3 thru 5.9.4 (auto installs).