Fix some linting issues

neovim/lua/plugins.lua

@@ -1,7 +1,7 @@
 -- Install packer
 local utils = require("utils")
 local install_path = vim.fn.stdpath("data") .. "/site/pack/packer/opt/packer.nvim"
-local packer_bootstrap = false
+local packer_bootstrap = ""
 if vim.fn.empty(vim.fn.glob(install_path)) > 0 then
     packer_bootstrap = vim.fn.system({ "git", "clone", "https://github.com/wbthomason/packer.nvim", install_path })
 end
@@ -411,6 +411,6 @@ use({
 })
 
 -- Auto sync after bootstrapping on a fresh box
-if packer_bootstrap then
+if packer_bootstrap ~= "" then
     packer.sync()
 end

neovim/lua/utils.lua

@@ -159,7 +159,7 @@ M.nil_val = {}
 -- If more than one rule matches, the one with the greatest version number is used
 function M.map_version_rule(rules)
     local v = vim.version()
-    local current_version = { v.major, v.minor, v.patch }
+    local current_version = { v and v.major, v and v.minor, v and v.patch }
 
     -- Parse a constraint and version of a string
     local parse_rule = function(rule_string)