move needsIndex into local scope

Configure function is the sole consumer of the needsIndex array, it
shoould then be in it's local scope. This change further improves code
quiality.

Author: peterbabic

lib/any.js

@@ -2,19 +2,6 @@
 
 module.exports = match
 
-var needsIndex = [
-  'first-child',
-  'first-of-type',
-  'last-child',
-  'last-of-type',
-  'nth-child',
-  'nth-last-child',
-  'nth-of-type',
-  'nth-last-of-type',
-  'only-child',
-  'only-of-type'
-]
-
 var zwitch = require('zwitch')
 var test = require('./test')
 var nest = require('./nest')
@@ -84,6 +71,18 @@ function rule(query, tree, state) {
 }
 
 function configure(query, state) {
+  var needsIndex = [
+    'first-child',
+    'first-of-type',
+    'last-child',
+    'last-of-type',
+    'nth-child',
+    'nth-last-child',
+    'nth-of-type',
+    'nth-last-of-type',
+    'only-child',
+    'only-of-type'
+  ]
   var pseudos = query.pseudos || []
   var index = -1