hg: jdk7/swing/jdk: 6875716: JLayer.remove((Component)null) should behave consistently in (not) throwing NPE

[alexander . potochkin]

Changeset: 51ccbb892a1f
Author:    alexp
Date:      2009-09-15 16:26 +0400
URL:       http://hg.openjdk.java.net/jdk7/swing/jdk/rev/51ccbb892a1f

6875716: JLayer.remove((Component)null) should behave consistently in (not) 
throwing NPE
Reviewed-by: rupashka

! src/share/classes/javax/swing/JLayer.java
+ test/javax/swing/JLayer/6875716/bug6875716.java