Final cleanup in app context

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

@@ -640,7 +640,7 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
                                 EntityLog.log(ServiceSynchronize.this, EntityLog.Type.Scheduling,
                                         "### stopped self eventId=" + eventId);
 
-                                WorkerCleanup.cleanupConditionally(ServiceSynchronize.this);
+                                WorkerCleanup.cleanupConditionally(getApplicationContext());
                             }
                         } catch (Throwable ex) {
                             Log.e(ex);

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

@@ -83,7 +83,7 @@ public class WorkerCleanup extends Worker {
 
         long now = new Date().getTime();
         long last_cleanup = prefs.getLong("last_cleanup", 0);
-        if (last_cleanup + CLEANUP_INTERVAL * 3600 * 1000L > now) {
+        if (last_cleanup + 2 * CLEANUP_INTERVAL * 3600 * 1000L > now) {
             Log.i("Skip cleanup last=" + new Date(last_cleanup));
             return;
         }