git: 029a09f18032 - main - sys/_types.h: Actually unbreak gcc build

The branch main has been updated by des:

URL: https://cgit.FreeBSD.org/src/commit/?id=029a09f18032353a9ae874590b879322efc6e53a

commit 029a09f18032353a9ae874590b879322efc6e53a
Author:     Dag-Erling Smørgrav <des@FreeBSD.org>
AuthorDate: 2025-11-30 10:30:45 +0000
Commit:     Dag-Erling Smørgrav <des@FreeBSD.org>
CommitDate: 2025-11-30 10:31:09 +0000

    sys/_types.h: Actually unbreak gcc build
    
    Fixes:          19728f31ae42 ("sys/_types.h: Unbreak gcc build")
    Reviewed by:    emaste
    Differential Revision:  https://reviews.freebsd.org/D53986
---
 sys/sys/_types.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sys/sys/_types.h b/sys/sys/_types.h
index f3c80957af34..4e217704ceb6 100644
--- a/sys/sys/_types.h
+++ b/sys/sys/_types.h
@@ -161,7 +161,10 @@ typedef	int		__cpulevel_t;	/* level parameter for cpuset. */
 typedef int		__cpusetid_t;	/* cpuset identifier. */
 typedef __int64_t	__daddr_t;	/* bwrite(3), FIOBMAP2, etc */
 
-#if !defined(__has_feature) || !__has_feature(capabilities)
+#ifndef __has_feature
+#define __has_feature(x)        0
+#endif
+#if !__has_feature(capabilities)
 /*
  * On non-CHERI systems, define __(u)intcap_t to __(u)intptr_t so that
  * hybrid-C code which needs to be explicitly aware of capabilities can