tdf#117017 Make modifier keys not trigger the InputChanged handler

Change-Id: Ib05883688ef4143c0b53871c4336920dde6f91cc
Reviewed-on: https://gerrit.libreoffice.org/52924Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Maxim Monastirsky <momonasmon@gmail.com>

sc/source/ui/app/inputwin.cxx

@@ -1425,6 +1425,10 @@ void ScTextWnd::Command( const CommandEvent& rCEvt )
         {
             //don't call InputChanged for CommandEventId::Swipe
         }
+        else if ( nCommand == CommandEventId::ModKeyChange )
+        {
+            //don't call InputChanged for CommandEventId::ModKeyChange
+        }
         else
             SC_MOD()->InputChanged( mpEditView.get() );
     }