Fix warning in Xcode 12.5

brackeen · brackeen · commit b58fdf35bd11 · 2021-05-01T19:15:37.000-07:00
diff --git a/Calculate/OutputItem.swift b/Calculate/OutputItem.swift
@@ -8,7 +8,7 @@
 
 import Cocoa
 
-protocol OutputItem: class {
+protocol OutputItem: AnyObject {
     
     var widthConstraint: NSLayoutConstraint? { get set }
     var view: NSView { get }
