QComboBox with Qt::NoFocus triggers a crash.
QComboBox with Qt::NoFocus triggers a crash.

The showPopup() from a combobox triggers a crash. This happens only for
a combobox which dosen't accept focus and it has been recreated. This is
due to some invalid widget pointer stored in the input context.

Task-number: 249576
Reviewed-by: ddenis

pruiz/wkhtmltopdf-qt,pruiz/wkhtmltopdf-qt,pruiz/wkhtmltopdf-qt,pruiz/wkhtmltopdf-qt,pruiz/wkhtmltopdf-qt,igor-sfdc/qt-wk,KDE/qt,RLovelett/qt,KDE/qt,radekp/qt,RLovelett/qt,radekp/qt,igor-sfdc/qt-wk,radekp/qt,igor-sfdc/qt-wk,igor-sfdc/qt-wk,pruiz/wkhtmltopdf-qt,radekp/qt,pruiz/wkhtmltopdf-qt,RLovelett/qt,pruiz/wkhtmltopdf-qt,radekp/qt,RLovelett/qt,KDE/qt,pruiz/wkhtmltopdf-qt,RLovelett/qt,KDE/qt,pruiz/wkhtmltopdf-qt,radekp/qt,igor-sfdc/qt-wk,radekp/qt,KDE/qt,igor-sfdc/qt-wk,radekp/qt,igor-sfdc/qt-wk,KDE/qt,RLovelett/qt,igor-sfdc/qt-wk,RLovelett/qt,igor-sfdc/qt-wk,radekp/qt,pruiz/wkhtmltopdf-qt,RLovelett/qt,RLovelett/qt,RLovelett/qt,KDE/qt,radekp/qt,KDE/qt,igor-sfdc/qt-wk,RLovelett/qt,igor-sfdc/qt-wk