fix: winfixbuf/current toggle bug from #1390

Author: cseickel

lua/neo-tree/ui/renderer.lua

@@ -164,12 +164,15 @@ M.close = function(state, focus_prior_window)
     state.winid = nil
   end
   local bufnr = utils.get_value(state, "bufnr", 0, true)
-  state.bufnr = nil
-  vim.schedule(function()
-    if bufnr > 0 and vim.api.nvim_buf_is_valid(bufnr) then
-      vim.api.nvim_buf_delete(bufnr, { force = true })
+  if bufnr > 0 and vim.api.nvim_buf_is_valid(bufnr) then
+    state.bufnr = nil
+    local success, err = pcall(vim.api.nvim_buf_delete, bufnr, { force = true })
+    if not success and err:match("E523") then
+      vim.schedule_wrap(function()
+        vim.api.nvim_buf_delete(bufnr, { force = true })
+      end)()
     end
-  end)
+  end
   return window_existed
 end