Fix pool.query not emitting connection errors

fixes #941

Author: dougwilson

Changes.md

@@ -4,6 +4,10 @@ This file is a manually maintained list of changes for each release. Feel free
 to add your changes here when sending pull requests. Also send corrections if
 you spot any mistakes.
 
+## HEAD
+
+* Fix `pool.query` streaming interface not emitting connection errors #941
+
 ## v2.5.2 (2014-10-10)
 
 * Fix receiving large text fields #922

lib/Pool.js

@@ -182,8 +182,8 @@ Pool.prototype.query = function (sql, values, cb) {
 
   this.getConnection(function (err, conn) {
     if (err) {
-      var cb = query._callback;
-      cb && cb(err);
+      query.on('error', function () {});
+      query.end(err);
       return;
     }