Remove handling of NULL mnt while we are at it - that can't happen these days.
Acked-by: NAl Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NDave Hansen <haveblue@us.ibm.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>