Move variable declaration to top of scope

lib/dialects/postgres/query-generator.js

@@ -145,10 +145,13 @@ module.exports = (function() {
     },
     },
 
 
     arrayValue: function(value, key, _key, factory){
     arrayValue: function(value, key, _key, factory){
+      var col      = null
+        , coltype  = null
+        , _realKey = key.split('.').pop()
+
       if (value.length === 0) { value = [null] }
       if (value.length === 0) { value = [null] }
-      var col = null, coltype = null
+
       // Special conditions for searching within an array column type
       // Special conditions for searching within an array column type
-      var _realKey = key.split('.').pop()
       if (!!factory && !!factory.rawAttributes[_realKey]) {
       if (!!factory && !!factory.rawAttributes[_realKey]) {
         col = factory.rawAttributes[_realKey]
         col = factory.rawAttributes[_realKey]
         coltype = col.type
         coltype = col.type