diff -rpcd a/contrib/dblink/dblink.c b/contrib/dblink/dblink.c
*** a/contrib/dblink/dblink.c	Thu Jun  5 13:17:04 2014
--- b/contrib/dblink/dblink.c	Mon Jun  9 15:35:39 2014
*************** materializeQueryResult(FunctionCallInfo 
*** 1045,1050 ****
--- 1045,1052 ----
  		sinfo.last_res = NULL;
  		PQclear(sinfo.cur_res);
  		sinfo.cur_res = NULL;
+ 		if (sinfo.tmpcontext != NULL)
+ 			MemoryContextDelete(sinfo.tmpcontext);
  	}
  	PG_CATCH();
  	{
*************** materializeQueryResult(FunctionCallInfo 
*** 1055,1060 ****
--- 1057,1064 ----
  		/* and clear out any pending data in libpq */
  		while ((res = PQgetResult(conn)) != NULL)
  			PQclear(res);
+ 		if (sinfo.tmpcontext != NULL)
+ 			MemoryContextDelete(sinfo.tmpcontext);
  		PG_RE_THROW();
  	}
  	PG_END_TRY();