btrfs: take allocation of ->tree_root into open_ctree()
authorAl Viro <viro@zeniv.linux.org.uk>
Thu, 17 Nov 2011 20:57:57 +0000 (15:57 -0500)
committerAl Viro <viro@zeniv.linux.org.uk>
Mon, 9 Jan 2012 00:37:02 +0000 (19:37 -0500)
now that we don't need it for sget() anymore...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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