IOS-91 (fix by Dmitry): fix crash in MapTimeControlView when currentItems is empty.

1Weather/UI/View controllers/Radar/MapTimeControl/MapTimeControlView.swift

@@ -137,6 +137,9 @@ class MapTimeControlView: UIView {
     }
     
     private func updateCurrentViewWith(proress:CGFloat) {
+        guard !currentItems.isEmpty else {
+            return
+        }
         let targetIndex = Int(CGFloat(currentItems.count - 1) * proress)
         let item = currentItems[targetIndex]
         currenTimeView.configure(timeItem: item)