Hide result String in TableBuilder. Also add clear() method to it.

modules/database/table_builder.cpp

@@ -132,6 +132,10 @@ Ref<QueryResult> TableBuilder::run() {
 void TableBuilder::run_query() {
 }
 
+void TableBuilder::clear() {
+	result.clear();
+}
+
 void TableBuilder::print() {
 	//printf("%s\n", result.get_data());
 	print_error(result);

modules/database/table_builder.h

@@ -77,13 +77,13 @@ public:
 	virtual Ref<QueryResult> run();
 	virtual void run_query();
 
+	void clear();
+
 	void print();
 
 	TableBuilder();
 	virtual ~TableBuilder();
 
-	String result;
-
 protected:
 	static void _bind_methods();
 
@@ -114,6 +114,8 @@ protected:
 
 	Ref<TableBuilder> _foreign_key_bind(const String &name);
 	Ref<TableBuilder> _references_bind(const String &table, const String &name);
+
+	String result;
 };
 
 #endif

modules/web/database/http_session_manager_db.cpp

@@ -251,7 +251,7 @@ void HTTPSessionManagerDB::_create_table() {
 	// tb->print();
 	tb->run_query();
 
-	tb->result = "";
+	tb->clear();
 
 	tb->create_table(_database_data_table_name);
 	tb->integer("session_db_id")->not_null()->next_row();