Fixing cppcheck "Prefer prefix ++/-- operators for non-primitive types." issues.

src/gui/qt/createnetworkgamedialog/createnetworkgamedialogimpl.cpp

@@ -84,7 +84,7 @@ void createNetworkGameDialogImpl::fillFormular() {
 	std::list<int> myBlindsList = myConfig->readConfigIntList("NetManualBlindsList");
 	std::list<int>::iterator it1;
 	
-	for(it1= myBlindsList.begin(); it1 != myBlindsList.end(); it1++) {
+	for(it1= myBlindsList.begin(); it1 != myBlindsList.end(); ++it1) {
 		myChangeCompleteBlindsDialog->listWidget_blinds->addItem(QString::number(*it1,10));
 	}
 	myChangeCompleteBlindsDialog->sortBlindsList();