[PATCH 2/2 v2] xfs: fix some minor sparse warnings

[Ben Myers]

On Mon, Sep 02, 2013 at 08:49:36PM +1000, Dave Chinner wrote:
> xfs: fix some minor sparse warnings
> 
> From: Dave Chinner <dchinner at redhat.com>
> 
> A couple of simple locking annotations and 0 vs NULL warnings.
> Nothing that changes any code behaviour, just removes build noise.
> 
> Signed-off-by: Dave Chinner <dchinner at redhat.com>
> Reviewed-by: Christoph Hellwig <hch at lst.de>

Applied.