Change Drawable.Empty to a method (#3144)
Change Drawable.Empty to a method (#3144)

Change Drawable.Empty to a method
EVAST9919/osu-framework,ppy/osu-framework,ppy/osu-framework,peppy/osu-framework,smoogipooo/osu-framework,peppy/osu-framework,ZLima12/osu-framework,EVAST9919/osu-framework,EVAST9919/osu-framework,ppy/osu-framework,peppy/osu-framework,smoogipooo/osu-framework,EVAST9919/osu-framework,ZLima12/osu-framework