fix error in lsp/handler when cmp_nvim_lsp plugin is not available

lua/user/lsp/handlers.lua

@@ -95,10 +95,8 @@ end
 local capabilities = vim.lsp.protocol.make_client_capabilities()
 
 local status_ok, cmp_nvim_lsp = pcall(require, "cmp_nvim_lsp")
-if not status_ok then
-  return
+if status_ok then
+  M.capabilities = cmp_nvim_lsp.update_capabilities(capabilities)
 end
 
-M.capabilities = cmp_nvim_lsp.update_capabilities(capabilities)
-
 return M