From 9f557f5280063b6e194da4541db75c568d27a901 Mon Sep 17 00:00:00 2001
From: Pierre Ossman <ossman@cendio.se>
Date: Fri, 29 Nov 2019 10:08:15 +0100
Subject: [PATCH] Make Cursor.detach() safe to call when not attached

Avoids having checks in higher layers.
---
 core/util/cursor.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/util/cursor.js b/core/util/cursor.js
index 35358136..99fe502d 100644
--- a/core/util/cursor.js
+++ b/core/util/cursor.js
@@ -64,6 +64,10 @@ export default class Cursor {
     }
 
     detach() {
+        if (!this._target) {
+            return;
+        }
+
         if (useFallback) {
             const options = { capture: true, passive: true };
             this._target.removeEventListener('mouseover', this._eventHandlers.mouseover, options);