destroy nodes, not explorer

lua/nvim-tree/explorer/init.lua

@@ -75,18 +75,6 @@ function Explorer:expand(node)
   self:_load(node)
 end
 
-function Explorer:destroy()
-  local function iterate(node)
-    node:destroy()
-    if node.nodes then
-      for _, child in pairs(node.nodes) do
-        iterate(child)
-      end
-    end
-  end
-  iterate(self)
-end
-
 ---@param node Node
 ---@param git_status table|nil
 function Explorer:reload(node, git_status)

lua/nvim-tree/node/directory.lua

@@ -49,4 +49,13 @@ function DirectoryNode:create(explorer, parent, absolute_path, name, fs_stat)
   return o
 end
 
+function DirectoryNode:destroy()
+  BaseNode.destroy(self)
+  if self.nodes then
+    for _, node in pairs(self.nodes) do
+      node:destroy()
+    end
+  end
+end
+
 return DirectoryNode