Add #include <limits.h> for PATH_MAX to fix compilation on FreeBSD.
Add #include <limits.h> for PATH_MAX to fix compilation on FreeBSD.

https://bugs.freedesktop.org/show_bug.cgi?id=40923

Distrotech/p11-kit,pspacek/p11-kit,freedesktop-unofficial-mirror/p11-glue__p11-kit,lkundrak/p11-kit,Distrotech/p11-kit,Distrotech/p11-kit,lkundrak/p11-kit,pspacek/p11-kit,pspacek/p11-kit,freedesktop-unofficial-mirror/p11-glue__p11-kit,Distrotech/p11-kit,freedesktop-unofficial-mirror/p11-glue__p11-kit,lkundrak/p11-kit,pspacek/p11-kit