hg: jdk7u/jdk7u6-dev/jdk: 7184145: (pack200) pack200 --repack throws NullPointerException when JAR file specified without path

[xueming.shen at oracle.com]

Changeset: e47e40956e1b
Author:    sherman
Date:      2012-07-25 14:00 -0700
URL:       http://hg.openjdk.java.net/jdk7u/jdk7u6-dev/jdk/rev/e47e40956e1b

7184145: (pack200) pack200 --repack throws NullPointerException when JAR file specified without path
Summary: fixed the null case
Reviewed-by: alanb

! src/share/classes/com/sun/java/util/jar/pack/Driver.java
+ test/tools/pack200/RepackTest.java