Fixed polling without schedule

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

@@ -148,7 +148,6 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
                 prefs.edit().putBoolean("schedule", checked).apply();
-                if (checked)
                 ServiceSynchronize.reschedule(getContext());
             }
         });

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

@@ -1548,13 +1548,14 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
         AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
         am.cancel(pi);
 
+        boolean enabled;
         long[] schedule = getSchedule(context);
         if (schedule == null)
-            return;
+            enabled = true;
-
+        else {
             long now = new Date().getTime();
             long next = (now < schedule[0] ? schedule[0] : schedule[1]);
-        boolean enabled = (now >= schedule[0] && now < schedule[1]);
+            enabled = (now >= schedule[0] && now < schedule[1]);
 
             Log.i("Schedule now=" + new Date(now));
             Log.i("Schedule start=" + new Date(schedule[0]));
@@ -1563,6 +1564,7 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
             Log.i("Schedule enabled=" + enabled);
 
             AlarmManagerCompat.setAndAllowWhileIdle(am, AlarmManager.RTC_WAKEUP, next, pi);
+        }
 
         WorkerPoll.init(context, enabled);
     }