block: Keep bdrv_check*_request()'s return value
Do not throw away the value returned by bdrv_check_request() and bdrv_check_byte_request(). Fix up some coding style issues in the proximity of the affected hunks. Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Reviewed-by: NKevin Wolf <kwolf@redhat.com> Message-id: 1423162705-32065-17-git-send-email-mreitz@redhat.com Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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