Fixed some leak issues with gdgifexporter

Made scrips extend Reference instead of Node

addons/gdgifexporter/converter.gd

@@ -1,4 +1,4 @@
-extends Node
+extends Reference
 
 
 var _shader: Shader

addons/gdgifexporter/gif-lzw/lsbbitpacker.gd

@@ -1,4 +1,4 @@
-extends Node
+extends Reference
 
 
 class LSB_LZWBitPacker:

addons/gdgifexporter/gif-lzw/lsbbitunpacker.gd

@@ -1,4 +1,4 @@
-extends Node
+extends Reference
 
 
 class LSB_LZWBitUnpacker:

addons/gdgifexporter/gif-lzw/lzw.gd

@@ -1,4 +1,4 @@
-extends Node
+extends Reference
 
 
 var lsbbitpacker = preload('./lsbbitpacker.gd')

addons/gdgifexporter/gifexporter.gd

@@ -1,4 +1,4 @@
-extends Node
+extends Reference
 
 
 var little_endian = preload('./little_endian.gd').new()

addons/gdgifexporter/little_endian.gd

@@ -1,4 +1,4 @@
-extends Node
+extends Reference
 
 
 func int_to_2bytes(value: int) -> PoolByteArray:

addons/gdgifexporter/quantization/median_cut.gd

@@ -1,4 +1,4 @@
-extends Node
+extends Reference
 
 
 var converter = preload('../converter.gd').new()

src/Autoload/Export.gd

@@ -240,7 +240,7 @@ func export_gif(args: Dictionary) -> void:
 	Global.notification_label("File(s) exported")
 
 
-func write_frame_to_gif(image: Image, wait_time: float, exporter: Node, export_dialog: Node) -> void:
+func write_frame_to_gif(image: Image, wait_time: float, exporter: Reference, export_dialog: Node) -> void:
 	exporter.write_frame(image, wait_time, quantization)
 	increase_export_progress(export_dialog)
 

src/Tools/Base.gd

@@ -73,7 +73,7 @@ func cursor_move(position : Vector2) -> void:
 
 func draw_indicator() -> void:
 	var rect := Rect2(_cursor, Vector2.ONE)
-	Global.canvas.draw_rect(rect, Color.blue, false)
+	Global.canvas.indicators.draw_rect(rect, Color.blue, false)
 
 
 func _get_draw_rect() -> Rect2: