missed a check is drain callback exists

calvium · Nov 24, 2014 · 0ba8c6b · 0ba8c6b
1 parent 03702bb
commit 0ba8c6b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/connection-pool.js b/lib/connection-pool.js
@@ -254,7 +254,8 @@ ConnectionPool.prototype.release = function(connection) {
 ConnectionPool.prototype.drain = function (callback) {
     this.log('draining pool');
     if (this.drained) {//pool has been drained
-        callback();
+        if (callback)
+            callback();
         return;
     }