6979537: closed/javax/swing/JSplitPane/UnitTest/UnitTest.java fails

Reviewed-by: rupashka

src/share/classes/javax/swing/plaf/basic/BasicSplitPaneUI.java

@@ -342,12 +342,10 @@ public class BasicSplitPaneUI extends SplitPaneUI
 
         setOrientation(splitPane.getOrientation());
 
-        // This plus 2 here is to provide backwards consistancy. Previously,
-        // the old size did not include the 2 pixel border around the divider,
-        // it now does.
-        Integer dividerSize = (Integer)UIManager.get("SplitPane.dividerSize");
-        if (divider == null) dividerSize = 10;
-        LookAndFeel.installProperty(splitPane, "dividerSize", dividerSize);
+        // note: don't rename this temp variable to dividerSize
+        // since it will conflict with "this.dividerSize" field
+        Integer temp = (Integer)UIManager.get("SplitPane.dividerSize");
+        LookAndFeel.installProperty(splitPane, "dividerSize", temp == null? 10: temp);
 
         divider.setDividerSize(splitPane.getDividerSize());
         dividerSize = divider.getDividerSize();