remove spaces when adding extra server users

udpserversetup.cpp

@@ -91,7 +91,7 @@ void udpServerSetup::on_usersTable_cellClicked(int row, int col)
 {
     qInfo() << "Clicked on " << row << "," << col;
     if (row == ui->usersTable->model()->rowCount() - 1 && ui->usersTable->item(row, 0) != NULL) {
-        addUserLine(" ", " ", 0);
+        addUserLine("", "", 0);
     }
 }
 
@@ -124,4 +124,4 @@ void udpServerSetup::addUserLine(const QString& user, const QString& pass, const
     comboBox->setCurrentIndex(type);
     ui->usersTable->setCellWidget(ui->usersTable->rowCount() - 1, 2, comboBox);
     
-}
+}