reset stage when QR scanning is cancelled

app/src/main/java/app/attestation/auditor/AttestationActivity.java

@@ -145,6 +145,10 @@
                             stage = Stage.None;
                         }
                     }
+                } else {
+                    if (stage == Stage.Auditee || stage == Stage.EnableRemoteVerify) {
+                        stage = Stage.None;
+                    }
                 }
             });
 
@@ -445,6 +449,9 @@
             if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                 startQrScanner();
             } else {
+                if (stage == Stage.Auditee || stage == Stage.EnableRemoteVerify) {
+                    stage = Stage.None;
+                }
                 snackbar.setText(R.string.camera_permission_denied).show();
             }
         } else if (requestCode == PERMISSIONS_REQUEST_POST_NOTIFICATIONS_REMOTE_VERIFY) {
@@ -567,6 +574,6 @@
 
     private void launchQrScannerActivity() {
         QRScannerActivityLauncher.launch(new Intent(this, QRScannerActivity.class));
         overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
     }
 }