tree-wide: Include <libaudit.h> via libaudit-util.h

Let's keep the ifdeffery for the include in one place.

src/core/audit-fd.c

@@ -3,19 +3,13 @@
 #include <errno.h>
 
 #include "audit-fd.h"
-
-#if HAVE_AUDIT
-#  include <stdbool.h>
-
-#  include "libaudit-util.h"
-#  include "capability-util.h"
+#include "capability-util.h"
+#include "libaudit-util.h"
 
 static bool initialized = false;
 static int audit_fd = -EBADF;
-#endif
 
 int get_core_audit_fd(void) {
-#if HAVE_AUDIT
         if (!initialized) {
                 if (have_effective_cap(CAP_AUDIT_WRITE) <= 0)
                         audit_fd = -EPERM;
@@ -26,15 +20,10 @@ int get_core_audit_fd(void) {
         }
 
         return audit_fd;
-#else
-        return -EAFNOSUPPORT;
-#endif
 }
 
 void close_core_audit_fd(void) {
-#if HAVE_AUDIT
         close_audit_fd(audit_fd);
         initialized = true;
         audit_fd = -ECONNRESET;
-#endif
 }

src/core/manager.c

@@ -12,10 +12,6 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
-#if HAVE_AUDIT
-#include <libaudit.h>
-#endif
-
 #include "sd-daemon.h"
 #include "sd-messages.h"
 #include "sd-path.h"
@@ -58,6 +54,7 @@
 #include "io-util.h"
 #include "iovec-util.h"
 #include "label-util.h"
+#include "libaudit-util.h"
 #include "load-fragment.h"
 #include "locale-setup.h"
 #include "log.h"

src/core/selinux-access.c

@@ -7,9 +7,6 @@
 #include <errno.h>
 #include <selinux/avc.h>
 #include <selinux/selinux.h>
-#if HAVE_AUDIT
-#include <libaudit.h>
-#endif
 
 #include "sd-bus.h"
 
@@ -18,6 +15,7 @@
 #include "bus-util.h"
 #include "errno-util.h"
 #include "format-util.h"
+#include "libaudit-util.h"
 #include "log.h"
 #include "path-util.h"
 #include "selinux-util.h"