Device Verification: Start: Fix missing cancelledByMe state

Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewController.swift

@@ -153,6 +153,8 @@ final class DeviceVerificationStartViewController: UIViewController {
             self.renderVerifyUsingLegacy(session: session, deviceInfo: deviceInfo)
         case .cancelled(let reason):
             self.renderCancelled(reason: reason)
+        case .cancelledByMe(let reason):
+            self.renderCancelledByMe(reason: reason)
         case .error(let error):
             self.render(error: error)
         }
@@ -195,6 +197,16 @@ final class DeviceVerificationStartViewController: UIViewController {
             self.viewModel.process(viewAction: .cancel)
         }
     }
+
+    private func renderCancelledByMe(reason: MXTransactionCancelCode) {
+        if reason.value != MXTransactionCancelCode.user().value {
+            self.activityPresenter.removeCurrentActivityIndicator(animated: true)
+
+            self.errorPresenter.presentError(from: self, title: "", message: VectorL10n.deviceVerificationCancelledByMe(reason.humanReadable), animated: true) {
+                self.viewModel.process(viewAction: .cancel)
+            }
+        }
+    }
     
     private func render(error: Error) {
         self.activityPresenter.removeCurrentActivityIndicator(animated: true)

Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewModel.swift

@@ -120,6 +120,11 @@ final class DeviceVerificationStartViewModel: DeviceVerificationStartViewModelTy
                 return
             }
             self.update(viewState: .cancelled(reason))
+        case MXSASTransactionStateCancelledByMe:
+            guard let reason = transaction.reasonCancelCode else {
+                return
+            }
+            self.update(viewState: .cancelledByMe(reason))
         default:
             break
         }

Riot/Modules/DeviceVerification/Start/DeviceVerificationStartViewState.swift

@@ -24,5 +24,6 @@ enum DeviceVerificationStartViewState {
     case loaded     // started
     case verifyUsingLegacy(MXSession, MXDeviceInfo)
     case cancelled(MXTransactionCancelCode)
+    case cancelledByMe(MXTransactionCancelCode)
     case error(Error)
 }