Adapt to the change in the main repo.
mallinfo is meant to be API compatible with Linux,
where it's provided by malloc.h.
(I think the API actually originated with System V. I don't
remember how it was there though. Anyway, I guess the
compatibility with Linux is more important than System V
these days.)
This is the companion to PR #766. It removes the CONFIG_CAN_PASS_STRUCT option as recommended by Issue #620
NuttX PR #766 depends on PR being in place but not vice versa. This PR should be merge-able without #766 and then PR #766 should also pass its checks.
1.Remove void cast for function because many place ignore the returned value witout cast
2.Replace void cast for variable with UNUSED macro
Change-Id: Ie644129a563244a6397036789c4c3ea83c4e9b09
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
