From f407a3d903dee688a43c7aa702cfcd2db7275faf Mon Sep 17 00:00:00 2001
From: Tiberiu Zuld <tiberiuzuld@gmail.com>
Date: Thu, 1 Mar 2018 14:53:01 +0200
Subject: [PATCH] fix(panel) memory leak

When destroying md-tooltip the callback `onDomAdded` remained attached and was causing a memory leak.

Added 4 lines with setting all 4 callbacks to null in `MdPanelRef.prototype.destroy`.

Fixes #11133
---
 src/components/panel/panel.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/components/panel/panel.js b/src/components/panel/panel.js
index ea458c3d0df..bd7b36e9419 100644
--- a/src/components/panel/panel.js
+++ b/src/components/panel/panel.js
@@ -1608,6 +1608,10 @@ MdPanelRef.prototype.destroy = function() {
   }
   this.config.scope.$destroy();
   this.config.locals = null;
+  this.config.onDomAdded = null;
+  this.config.onDomRemoved = null;
+  this.config.onRemoving = null;
+  this.config.onOpenComplete = null;
   this._interceptors = null;
 };