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Btrfs: avoid null deref in unpin_extent_cache()
authorDan Carpenter <error27@gmail.com>
Tue, 10 Nov 2009 09:01:43 +0000 (09:01 +0000)
committerChris Mason <chris.mason@oracle.com>
Wed, 11 Nov 2009 19:20:18 +0000 (14:20 -0500)
I re-orderred the checks to avoid dereferencing "em" if it was null.

Found by smatch static checker.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

No differences found
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