Attempt to "Fix" OpenBSD Build (Followup)

[BenBE]

This is a follow-up to #1277 from @time-killer-games.

This basically re-instates the variant I rebased onto current main (a0f7854).

I'll remove dropping the block of memory accounting code present in that commit, if there are no objections. Reasoning in the original PR.

[BenBE]

@natoscott @time-killer-games: Any objections to drop this hunk from the PR?

diff --git a/openbsd/OpenBSDMachine.c b/openbsd/OpenBSDMachine.c
index 0ff893b5..95ab52fb 100644
--- a/openbsd/OpenBSDMachine.c
+++ b/openbsd/OpenBSDMachine.c
@@ -141,18 +141,7 @@ static void OpenBSDMachine_scanMemoryInfo(OpenBSDMachine* this) {
    }
 
    super->totalMem = uvmexp.npages * this->pageSizeKB;
-   super->usedMem = (uvmexp.npages - uvmexp.free - uvmexp.paging) * this->pageSizeKB;
-
-   // Taken from OpenBSD systat/iostat.c, top/machine.c and uvm_sysctl(9)
-   const int bcache_mib[] = { CTL_VFS, VFS_GENERIC, VFS_BCACHESTAT };
-   struct bcachestats bcstats;
-   size_t size_bcstats = sizeof(bcstats);
-
-   if (sysctl(bcache_mib, 3, &bcstats, &size_bcstats, NULL, 0) < 0) {
-      CRT_fatalError("cannot get vfs.bcachestat");
-   }
-
-   super->cachedMem = bcstats.numbufpages * this->pageSizeKB;
+   super->usedMem = (uvmexp.npages - uvmexp.free) * this->pageSizeKB;
 
    /*
     * Copyright (c) 1994 Thorsten Lockert <tholo@sigmasoft.com>

[time-killer-games]

@natoscott @time-killer-games: Any objections to drop this hunk from the PR?

diff --git a/openbsd/OpenBSDMachine.c b/openbsd/OpenBSDMachine.c
index 0ff893b5..95ab52fb 100644
--- a/openbsd/OpenBSDMachine.c
+++ b/openbsd/OpenBSDMachine.c
@@ -141,18 +141,7 @@ static void OpenBSDMachine_scanMemoryInfo(OpenBSDMachine* this) {
    }
 
    super->totalMem = uvmexp.npages * this->pageSizeKB;
-   super->usedMem = (uvmexp.npages - uvmexp.free - uvmexp.paging) * this->pageSizeKB;
-
-   // Taken from OpenBSD systat/iostat.c, top/machine.c and uvm_sysctl(9)
-   const int bcache_mib[] = { CTL_VFS, VFS_GENERIC, VFS_BCACHESTAT };
-   struct bcachestats bcstats;
-   size_t size_bcstats = sizeof(bcstats);
-
-   if (sysctl(bcache_mib, 3, &bcstats, &size_bcstats, NULL, 0) < 0) {
-      CRT_fatalError("cannot get vfs.bcachestat");
-   }
-
-   super->cachedMem = bcstats.numbufpages * this->pageSizeKB;
+   super->usedMem = (uvmexp.npages - uvmexp.free) * this->pageSizeKB;
 
    /*
     * Copyright (c) 1994 Thorsten Lockert <tholo@sigmasoft.com>

No objection from me.