Java 7 compatible code

databrowser-gui/src/main/java/org/cdma/gui/databrowser/view/displaymanager/ScaleTableCellEditor.java

@@ -274,7 +274,7 @@ public class ScaleTableCellEditor extends DefaultCellEditor {
         protected ListCellRenderer<?> createRenderer() {
             ListCellRenderer<?> renderer = super.createRenderer();
             if (renderer instanceof JComponent) {
-                JComponent comp = (JComponent) renderer;
+                final JComponent comp = (JComponent) renderer;
                 comp.setOpaque(true);
                 comp.addPropertyChangeListener(new PropertyChangeListener() {
                     @Override