Locale.java (Locale): Don't explicitly check for null.

Locale.java (Locale): Don't explicitly check for null.

	* java/util/Locale.java (Locale): Don't explicitly check for
	null.
	* java/util/Hashtable.java (containsKey): Don't explicitly check
	for null.
	(get): Likewise.
	* java/util/BitSet.java (and, or, xor): Don't explicitly check for
	null.
	* java/util/zip/ZipEntry.java (ZipEntry): Don't explicitly check
	for null.
	* java/text/StringCharacterIterator.java
	(StringCharacterIterator): Don't check for null.
	* java/text/ChoiceFormat.java (setChoices): Don't explicitly check
	for null pointer.
	* java/net/MulticastSocket.java (joinGroup): Don't explicitly
	check for null pointer.
	(leaveGroup): Likewise.
	* java/net/DatagramPacket.java (DatagramPacket): Removed erroneous
	comment.
	(setData): Likewise.
	* java/lang/ThreadGroup.java (ThreadGroup): Don't explicitly check
	for `p==null'.

From-SVN: r33671