Defaults resultSet to object if undefined in QueryTablesApi

NEWS.md

@@ -1,6 +1,9 @@
 1.18.2 -- 2014-mm-dd
 --------------------
 
+Bug fixes:
+ - Defaults resultSet to object if undefined in QueryTablesApi
+
 1.18.1 -- 2014-10-13
 --------------------
 

lib/cartodb/api/query_tables_api.js

@@ -93,6 +93,7 @@ function runQuery(username, options, query, queryHandler, callback) {
     if (shouldQueryPostgresDirectly()) {
         var psql = new PSQL(options);
         psql.query(query, function(err, resultSet) {
+            resultSet = resultSet || {};
             var rows = resultSet.rows || [];
             queryHandler(err, rows, callback);
         });