Move sort array into createExpectedQuery().

test/unit/query/search.js
	-The fact that it's a singleton was causing problems because at
	least one of the tests directly modifies it (this was one of the
	reasons why the base query itself was moved into
	`createExpectedQuery()`).
	-Move it into `createExpectedQuery()` as well.

test/unit/query/search.js

@@ -16,7 +16,8 @@ module.exports.tests.interface = function(test, common) {
   });
 };
 
-var sort = [
+function createExpectedQuery(){
+  var sort = [
     '_score',
     {
       '_script': {
@@ -69,9 +70,8 @@ var sort = [
         'order': 'desc'
       }
     }
-];
+  ];
 
-function createExpectedQuery(){
   return {
     'query': {
       'filtered': {