get rid of warning with core data

Shared/Persistence.swift

@@ -197,20 +197,15 @@ class PersistenceController {
         } else {
             container = NSPersistentContainer(name: "Feels")
         }
-        
-        guard let description = container.persistentStoreDescriptions.first else {
-            fatalError("Could not retrieve a persistent store description.")
-        }
-        
-        description.setOption(true as NSNumber, forKey: NSPersistentHistoryTrackingKey)
-        container.viewContext.automaticallyMergesChangesFromParent = true
-        
+            
         for description in container.persistentStoreDescriptions {
             description.setOption(true as NSNumber, forKey: NSPersistentStoreRemoteChangeNotificationPostOptionKey)
             description.setOption(true as NSNumber, forKey: NSPersistentHistoryTrackingKey)
         }
         
         container.loadPersistentStores(completionHandler: { (storeDescription, error) in
+            self.container.viewContext.automaticallyMergesChangesFromParent = true
+
             if let error = error as NSError? {
                 fatalError("Unresolved error \(error), \(error.userInfo)")
             }