Merge pull request duckdb#310 from Maxxen/funcs

Refactor to untyped geometry representation

Author: Maxxen

duckdb

@@ -33,6 +33,7 @@ struct CoreScalarFunctions {
 		RegisterStHilbert(db);
 		RegisterStIntersects(db);
 		RegisterStIntersectsExtent(db);
+		RegisterStIsClosed(db);
 		RegisterStIsEmpty(db);
 		RegisterStLength(db);
 		RegisterStMakeEnvelope(db);
@@ -137,6 +138,9 @@ struct CoreScalarFunctions {
 	// ST_IntersectsExtent (&&)
 	static void RegisterStIntersectsExtent(DatabaseInstance &db);
 
+	// ST_IsClosed
+	static void RegisterStIsClosed(DatabaseInstance &db);
+
 	// ST_IsEmpty
 	static void RegisterStIsEmpty(DatabaseInstance &db);