#include <stddef.h> for the definition of NULL instead of depending on

namespace pollution 2 layers deep in <sys/stat.h>.

Sorted includes.

lib/libutil/_secure_path.c

@@ -24,9 +24,11 @@ __FBSDID("$FreeBSD$");
 
 #include <sys/types.h>
 #include <sys/stat.h>
-#include <syslog.h>
+
 #include <errno.h>
 #include <libutil.h>
+#include <stddef.h>
+#include <syslog.h>
 
 /*
  * Check for common security problems on a given path