add return statement

Author: gr0uch

lib/index.js

@@ -503,7 +503,7 @@ module.exports = Adapter => class PostgreSQLAdapter extends Adapter {
       const updateRecord = `update "${typeMap[type] || type}" ${set} ` +
         `where "${primaryKey}" = $${index}`
 
-      client.query(updateRecord, parameters, (error, result) => {
+      return client.query(updateRecord, parameters, (error, result) => {
         if (error) {
           const code = getCode(error)