tools/mm: fix compile error

tools/mm: fix compile error

Add a missing semicolon.

Link: https://lkml.kernel.org/r/20241112171655.1662670-1-motiejus@jakstys.lt
Fixes: ece5897e5a10 ("tools/mm: -Werror fixes in page-types/slabinfo")
Signed-off-by: Motiejus JakÅ`tys <motiejus@jakstys.lt>
Closes: https://github.com/NixOS/nixpkgs/issues/355369
Reviewed-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Acked-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: Wladislav Wiebe <wladislav.kw@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>