gperf: add missing.h that was present in the C version to the m4

This fixes:

src/load-fragment-gperf.c:413:51: error: 'RLIMIT_RTTIME' undeclared (first use in this function)

diff --git a/src/load-fragment-gperf.gperf.m4 b/src/load-fragment-gperf.gperf.m4
index 650f44490a2d0ad786d6edc6855f524604f10268..8e52890dbea5fac1d639230e08f0e1c06b93d8b1 100644 (file)
--- a/src/load-fragment-gperf.gperf.m4
+++ b/src/load-fragment-gperf.gperf.m4
@@ -2,6 +2,7 @@
 #include <stddef.h>
 #include "conf-parser.h"
 #include "load-fragment.h"
+#include "missing.h"
 %}
 struct ConfigPerfItem;
 %null_strings