Fix Menu icons are too large on Cocoa
Fix Menu icons are too large on Cocoa

The magic number 22 was based on windows sized icons, a size of 16
should be correct for mac

Task-number: 259289
Reviewed-by: NRC

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