Fix potential crash

LeStorage/StoredCollection.swift

@@ -334,7 +334,8 @@ public class StoredCollection<T: Storable>: RandomAccessCollection, SomeCollecti
         defer {
             self._hasChanged = true
         }
-        for item in items {
+        let itemsArray = Array(items) // fix error if items is self.items
+        for item in itemsArray {
             if let index = self.items.firstIndex(where: { $0.id == item.id }) {
                 self.items.remove(at: index)
             }