fix jshint errors for lib/utils.js

Author: booo

lib/utils.js

@@ -25,7 +25,7 @@ var prepareValue = function(val) {
     return null;
   }
   return val === null ? null : val.toString();
-}
+};
 
 function normalizeQueryConfig (config, values, callback) {
   //can take in strings or config objects
@@ -46,4 +46,4 @@ function normalizeQueryConfig (config, values, callback) {
 module.exports = {
   prepareValue: prepareValue,
   normalizeQueryConfig: normalizeQueryConfig
-}
+};