Update `rowCount` to always return an integer

lib/dialects/postgres/query.js

@@ -207,7 +207,7 @@ module.exports = (function() {
         return results;
       } else if (QueryTypes.BULKUPDATE === self.options.type) {
         if (!self.options.returning) {
-          return result.rowCount;
+          return parseInt(result.rowCount, 10);
         }
 
         if (!!self.callee && !!self.callee._hasHstoreAttributes) {
@@ -218,7 +218,7 @@ module.exports = (function() {
 
         return self.handleSelectQuery(rows);
       } else if (QueryTypes.BULKDELETE === self.options.type) {
-        return result.rowCount;
+        return parseInt(result.rowCount, 10);
       } else if (self.isUpsertQuery()) {
         return rows[0].sequelize_upsert;
       } else if (self.isInsertQuery() || self.isUpdateQuery()) {