Fix credits menu bg not being able to be animated

Author: NeeEoo

source/funkin/menus/credits/CreditsMain.hx

@@ -11,7 +11,7 @@ class CreditsMain extends TreeMenu {
 	var items:Array<OptionType> = [];
 
 	public override function create() {
-		bg = new FlxSprite(-80).loadGraphic(Paths.image('menus/menuBGBlue'));
+		bg = new FlxSprite(-80).loadAnimatedGraphic(Paths.image('menus/menuBGBlue'));
 		// bg.scrollFactor.set();
 		bg.scale.set(1.15, 1.15);
 		bg.updateHitbox();

source/funkin/options/OptionsMenu.hx

@@ -31,14 +31,16 @@ class OptionsMenu extends TreeMenu {
 		}
 	];
 
+	var bg:FlxSprite;
+
 	public override function create() {
 		super.create();
 
 		CoolUtil.playMenuSong();
 
 		DiscordUtil.call("onMenuLoaded", ["Options Menu"]);
 
-		var bg:FlxSprite = new FlxSprite(-80).loadAnimatedGraphic(Paths.image('menus/menuBGBlue'));
+		bg = new FlxSprite(-80).loadAnimatedGraphic(Paths.image('menus/menuBGBlue'));
 		// bg.scrollFactor.set();
 		bg.scale.set(1.15, 1.15);
 		bg.updateHitbox();