[PATCH] uml: fix patch mismerge

I sent a patch, it was applied as cda402b283c34a24b091f78eee116963e9494762,
then it was applied again as 181ae4005d0a4010802be534d929b38c42b9ac06 by
mistake.  But while the 1st time it modified (correctly) cow_header_v3, the
2nd it modified cow_header_v3_broken.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>