Fixes a "variable might be used uninitialized".  As usual it's a harmless
warning because it can't really be, but that cleans the compilation's
output :)
Signed-off-by: Colin Leroy <colin@colino.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>