fix for case when view controllers are empty

Author: igork-ramotion

RAMAnimatedTabBarController/RAMAnimatedTabBarController.swift

@@ -132,13 +132,12 @@ open class RAMAnimatedTabBarController: UITabBarController {
 
     // MARK: create methods
     private func initializeContainers() {
-        guard let items = tabBar.items, items.count <= 5 else {
-            fatalError("More button not supported")
-        }
-        
         containers.forEach { $0.removeFromSuperview() }
         containers.removeAll()
 
+        guard let items = tabBar.items else { return }
+        guard items.count <= 5 else { fatalError("More button not supported") }
+        
         for index in 0 ..< items.count {
             let viewContainer = UIView()
             viewContainer.isExclusiveTouch = true