add missing include of storage/s_lock.h into clustermon.h

diff --git a/src/include/postmaster/clustermon.h b/src/include/postmaster/clustermon.h
index eb5bb84701f15b5cf1a79a1ad16571276a6d38e8..8967ee5510168a8d8cd198d812334fb44f689f3b 100644 (file)
--- a/src/include/postmaster/clustermon.h
+++ b/src/include/postmaster/clustermon.h
@@ -16,6 +16,7 @@
 #ifndef CLUSTERMON_H
 #define CLUSTERMON_H
 
+#include "storage/s_lock.h"
 #include "gtm/gtm_c.h"
 
 typedef struct