[#127944191] Fix compiler warning in gp_dump_query_oids

We just need to pass the query tree, we don't need source sql text and
other arguments, so change to QueryRewrite here. Previously an implicit
cast was causing a compiler warning. Also, the method pg_analyze_and_rewrite
is overkill, and in fact calls QueryRewrite.

src/bin/gpoptutils/gpoptutils.c

@@ -108,8 +108,8 @@ gp_dump_query_oids(PG_FUNCTION_ARGS)
 		Query *query = (Query *) lfirst(plc);
 		if (CMD_UTILITY == query->commandType && T_ExplainStmt == query->utilityStmt->type)
 		{
-			Node *queryExplain = ((ExplainStmt *)query->utilityStmt)->query;
-			List *queryTree = pg_analyze_and_rewrite(queryExplain, sqlText, NULL, 0);
+			Query *queryExplain = ((ExplainStmt *)query->utilityStmt)->query;
+			List *queryTree = QueryRewrite(queryExplain);
 			Assert(1 == list_length(queryTree));
 			query = (Query *) lfirst(list_head(queryTree));
 		}