Fixed exporting settings

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

@@ -549,10 +549,9 @@ public class ActivitySetup extends ActivityBilling implements FragmentManager.On
                         OutputStream cout = new CipherOutputStream(raw, cipher);
                         cout.write(jexport.toString(2).getBytes());
                         cout.flush();
+                        raw.write(cipher.doFinal());
                     }
 
-                    raw.flush();
-
                     Log.i("Exported data");
                 }