fs: omfs: use kmemdup() rather than kmalloc+memcpy

Issue identified with Coccinelle.

Signed-off-by: Alex Dewar <alex.dewar90@gmail.com>
Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
1 file changed