Merge remote-tracking branch 'origin/wxr4' into WJC

JLChen

2021-06-06 4d6c9858844d1545a9b253c1b31842fa89695c1d

 HDL-ON_iOS/Scan.cs

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

                    scanner?.Cancel();
                };