From ffc66a4c3c7b91d3609bbc3402ee620086aeb90f Mon Sep 17 00:00:00 2001
From: Ravbug <ravbuganimations@gmail.com>
Date: Mon, 20 Dec 2021 13:41:03 -0800
Subject: [PATCH] Fix use of constant only available on macOS 12+ (#2689)

---
 src/renderer_mtl.mm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/renderer_mtl.mm b/src/renderer_mtl.mm
index 4f28393b2..9f7ad54ab 100644
--- a/src/renderer_mtl.mm
+++ b/src/renderer_mtl.mm
@@ -536,7 +536,7 @@ namespace bgfx { namespace mtl
 
 					if (0 != registryId)
 					{
-						entry = IOServiceGetMatchingService(kIOMainPortDefault, IORegistryEntryIDMatching(registryId) );
+						entry = IOServiceGetMatchingService(NULL, IORegistryEntryIDMatching(registryId) );
 
 						if (0 != entry)
 						{