Simplify for loop

Author: Axel Rindle

lib/check.js

@@ -71,7 +71,7 @@ const rest = (options, callback) => {
       // Compare versions
       let found = false;
       let version = null;
-      for (i = 0, len = json.length; i < len; i++) {
+      for (let i = 0; i < json.length; i++) {
         version = json[i];
         if (semver.gt(version.tag_name, options.currentVersion)) {
           found = true;