Merge pull request #48 from Excello-Recherche-Education/small-debug

Small debug

folder_unzipper.gd

@@ -16,7 +16,7 @@ func extract(zip_path: String, extract_path: String, extract_in_subfolder: bool
 	file_count.emit(all_files.size())
 	
 	var copied_file: int = 0
-	var first_folder: String
+	var first_folder: String = ""
 	for sub_path: String in all_files:
 		if not first_folder:
 			first_folder = sub_path.split("/")[0]

folder_zipper.gd

@@ -29,6 +29,7 @@ func write_folder_recursive(abs_path: String, rel_path: String) -> Error:
 				if file:
 					write_file(file.get_buffer(file.get_length()))
 					file.close()
+					close_file()
 				else:
 					return FileAccess.get_open_error()