hg: jdk8/tl/jdk: 7160242: (prefs) Preferences.remove(null) does not throw NPE [macosx]

[kurchi.subhra.hazra at oracle.com]

Changeset: 3e398b549cea
Author:    khazra
Date:      2012-04-25 12:31 -0700
URL:       http://hg.openjdk.java.net/jdk8/tl/jdk/rev/3e398b549cea

7160242: (prefs) Preferences.remove(null) does not throw NPE [macosx]
Summary: Insert null check of argument in remove()'s implementation
Reviewed-by: forax, chegar, alanb

! src/macosx/classes/java/util/prefs/MacOSXPreferences.java
+ test/java/util/prefs/RemoveNullKeyCheck.java