Fix equalfuncs for accessMethod addition in 8586bf7ed8.

In a complete brown paper bag moment, I forgot to include equalfuncs
in my previous fix of copy/out/readfuncs.  Thanks Tom for noticing.

Discussion: https://postgr.es/m/1659.1551903210@sss.pgh.pa.us

src/backend/nodes/equalfuncs.c

@@ -142,6 +142,7 @@ _equalIntoClause(const IntoClause *a, const IntoClause *b)
 {
 	COMPARE_NODE_FIELD(rel);
 	COMPARE_NODE_FIELD(colNames);
+	COMPARE_STRING_FIELD(accessMethod);
 	COMPARE_NODE_FIELD(options);
 	COMPARE_SCALAR_FIELD(onCommit);
 	COMPARE_STRING_FIELD(tableSpaceName);
@@ -1240,6 +1241,7 @@ _equalCreateStmt(const CreateStmt *a, const CreateStmt *b)
 	COMPARE_NODE_FIELD(options);
 	COMPARE_SCALAR_FIELD(oncommit);
 	COMPARE_STRING_FIELD(tablespacename);
+	COMPARE_STRING_FIELD(accessMethod);
 	COMPARE_SCALAR_FIELD(if_not_exists);
 
 	return true;