Add missing #include.

Oversight in b2c64f571 (the later branches already have this).
Per buildfarm.

diff --git a/src/include/utils/date.h b/src/include/utils/date.h
index d1c34b2caf1e549392122913ebb07ca4912ee2ca..064951be3e342f9555edcc0029b6e1ac7e2a7ed3 100644 (file)
--- a/src/include/utils/date.h
+++ b/src/include/utils/date.h
@@ -17,7 +17,7 @@
 #include <math.h>
 
 #include "fmgr.h"
-
+#include "datatype/timestamp.h"
 
 typedef int32 DateADT;