seccomp-util.h: make sure seccomp-util.h can be included alone

src/shared/missing.h

@@ -40,12 +40,12 @@
 #include <libaudit.h>
 #endif
 
-#include "macro.h"
-
 #ifdef ARCH_MIPS
 #include <asm/sgidefs.h>
 #endif
 
+#include "macro.h"
+
 #ifndef RLIMIT_RTTIME
 #define RLIMIT_RTTIME 15
 #endif

src/shared/seccomp-util.h

@@ -21,6 +21,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <seccomp.h>
 
 const char* seccomp_arch_to_string(uint32_t c);
 int seccomp_arch_from_string(const char *n, uint32_t *ret);