hg: jdk7u/jdk7u-dev/jdk: 7160242: (prefs) Preferences.remove(null) does not throw NPE [macosx]

[kurchi . subhra . hazra]

Changeset: c5ed3000a57f
Author:    khazra
Date:      2013-03-26 10:57 -0700
URL:       http://hg.openjdk.java.net/jdk7u/jdk7u-dev/jdk/rev/c5ed3000a57f

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