Fix a potentially empty translation.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

karm/mainwindow.cpp

@@ -136,7 +136,7 @@ void MainWindow::slotSelectionChanged()
 
 void MainWindow::setStatusBar(TQString qs)
 {
-  statusBar()->message(i18n(qs.ascii()));
+  statusBar()->message(qs.isEmpty() ? "" : i18n(qs.ascii()));
 }
 
 bool MainWindow::save()