BUILD: stick-table: include freq_ctr.h from stick_table.h
It's needed for update_freq_ctr_period() which is used there.
diff --git a/include/haproxy/stick_table.h b/include/haproxy/stick_table.h
index 401b89e..5a3b400 100644
--- a/include/haproxy/stick_table.h
+++ b/include/haproxy/stick_table.h
@@ -26,6 +26,7 @@
#include <haproxy/api.h>
#include <haproxy/dict-t.h>
#include <haproxy/errors.h>
+#include <haproxy/freq_ctr.h>
#include <haproxy/sample-t.h>
#include <haproxy/stick_table-t.h>
#include <haproxy/ticks.h>