refix deleting items

Author: tibbi

app/src/main/java/com/simplemobiletools/filemanager/fragments/ItemsFragment.java

@@ -336,6 +336,7 @@ public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
                 displayCopyDialog();
                 break;
             case R.id.cab_delete:
+                prepareForDeleting();
                 break;
             default:
                 return false;