Fix 'format not a string literal' error.

Thanks to Serghei Amelian.

kommander/widgets/execbutton.cpp

@@ -207,7 +207,7 @@ TQString ExecButton::handleDCOP(int function, const TQStringList& args)
       TQWidget * w;
       while ( (w=it.current()) != 0 ) {  // for each widget...
         ++it;
-        if (w->name() == args[0] && w->className() == "PopupMenu")
+        if (w->name() == args[0] && ( strcmp(w->className(), "PopupMenu")) == 0 )
         {
           TQPopupMenu *popup = dynamic_cast<TQPopupMenu*>(w->child("unnamed", "KPopupMenu"));
           this->setPopup(popup);