Fixed crash when loading a pxo older of 0.8.1 and selecting a frame other than the first

Had to do with Project.frame_duration not having as array members as it should.

CHANGELOG.md

@@ -28,6 +28,7 @@ PinyaColada, Rémi Verschelde (akien-mga), dasimonde, gschwind
 - Fixed issue where the user could grab and could not let go of the focus of guides even when they were invisible.
 - Fixed issues where fully transparent color could not be picked. One of these cases was [#364](https://github.com/Orama-Interactive/Pixelorama/issues/364).
 - Fixed "Export" option in the File menu not working properly and not remembering the directory path and file name when switching between projects (tabs).
+- Fixed crash when loading a pxo older of 0.8.1 and selecting a frame other than the first.
 - Fixed Chinese and Korean characters not displaying properly in the Splash dialog and the About dialog.
 - Fixed crash when importing an incorrectly formatted GIMP Color Palette file. ([#363](https://github.com/Orama-Interactive/Pixelorama/issues/363))
 - Using the lighten/darken on pixels with an alpha value of 0 no longer has an effect on them.

src/Autoload/OpenSave.gd

@@ -218,6 +218,8 @@ func open_old_pxo_file(file : File, new_project : Project, first_line : String)
 
 		new_project.size = Vector2(width, height)
 		new_project.frames.append(frame_class)
+		if frame >= new_project.frame_duration.size():
+			new_project.frame_duration.append(1)
 		frame_line = file.get_line()
 		frame += 1
 

src/Classes/Project.gd

@@ -339,6 +339,11 @@ func deserialize(dict : Dictionary) -> void:
 		file_format = dict.export_file_format
 	if dict.has("frame_duration"):
 		frame_duration = dict.frame_duration
+	else:
+		for i in frames.size():
+			if i < frame_duration.size():
+				continue
+			frame_duration.append(1)
 
 func name_changed(value : String) -> void:
 	name = value