1. This fixes a kernel oops when issuing an FBIO_CURSOR ioctl if struct
   fb_cursor_user is filled with zero/NULLs.  Reported by Yuval Kogman
   <nothingmuch@woobling.org>.

2. This also fixes the cursor corruption in soft_cursor when
   sprite.scan_align != 1.
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>