LU-16346 utils: fix lctl stack smashing

LU-16346 utils: fix lctl stack smashing

on aarch64 architecture:
... 
exec lustre/utils/.libs/lctl dl
*** stack smashing detected ***: terminated
Aborted (core dumped)

genlmsg_parse() was misused in yaml_netlink_msg_parse().
It requires passing maxtype+1 elements, but maxtype+1 as a number
of elements passed actually. Should be maxtype actually.

Signed-off-by: Artem Blagodarenko <ablagodarenko@ddn.com>
Change-Id: Ic9cd0de35a028ca28bdd112700296d21e04a1cc5
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/49254
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>