合并嘉乐代码并测试通过

hxb

2021-03-05 43b6e3d6a3a96e7b759b396df4f141ab105fb6bb

 HDL-ON_iOS/Scan.cs

@@ -35,7 +35,6 @@
                var bOn = false;
                mZXingOverlayView.OnCancel += () =>
                {

                    scanner?.Cancel();
                };