Prevent crash

app/src/main/java/eu/faircode/email/ActivitySetup.java

@@ -568,7 +568,6 @@ public class ActivitySetup extends ActivityBilling implements FragmentManager.On
                         OutputStream cout = new CipherOutputStream(raw, cipher);
                         cout.write(jexport.toString(2).getBytes());
                         cout.flush();
-                        cout.close();
                     }
 
                     raw.flush();