hg: jdk8/tl/jdk: 7127235: (fs) NPE in Files.walkFileTree if cached attributes are GC'ed

[alan.bateman at oracle.com]

Changeset: 400cc379adb5
Author:    alanb
Date:      2012-01-06 15:00 +0000
URL:       http://hg.openjdk.java.net/jdk8/tl/jdk/rev/400cc379adb5

7127235: (fs) NPE in Files.walkFileTree if cached attributes are GC'ed
Reviewed-by: forax, chegar

! src/share/classes/java/nio/file/FileTreeWalker.java