Fix all lib/ files with ESLint rules with 0 errors.

lib/util/srv.js

@@ -41,7 +41,7 @@ function shuffleWeighted(records) {
 
   function pick(records, sum) {
     var rand = Math.random() * sum
-      , counter = 0
+    var counter = 0
 
     for (var i = 0, l = records.length; i < l; ++i) {
       counter += records[i].weight
@@ -117,7 +117,7 @@ srv.attempt = function(records, fn) {
     }
 
     return fn(records[i]).catch(srv.NEXT, function() {
-      return next(++i)
+      return next(i + 1)
     })
   }