Fixed wrong method binding in control

Control.get_parent_area_size() is now bound to
Control::get_parent_area_size() instead of Control::get_size()

scene/gui/control.cpp

@@ -2721,7 +2721,7 @@ void Control::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_scale"), &Control::get_scale);
 	ClassDB::bind_method(D_METHOD("get_pivot_offset"), &Control::get_pivot_offset);
 	ClassDB::bind_method(D_METHOD("get_custom_minimum_size"), &Control::get_custom_minimum_size);
-	ClassDB::bind_method(D_METHOD("get_parent_area_size"), &Control::get_size);
+	ClassDB::bind_method(D_METHOD("get_parent_area_size"), &Control::get_parent_area_size);
 	ClassDB::bind_method(D_METHOD("get_global_position"), &Control::get_global_position);
 	ClassDB::bind_method(D_METHOD("get_rect"), &Control::get_rect);
 	ClassDB::bind_method(D_METHOD("get_global_rect"), &Control::get_global_rect);