From 0f327c7aad64094fdcc99c65bb4fc1dffea0e11d Mon Sep 17 00:00:00 2001
From: Shimon Doodkin <helpmepro1@gmail.com>
Date: Thu, 5 Apr 2018 23:07:15 +0300
Subject: [PATCH] Fix #285. Remove mouseTrack only when one exists

---
 js/plugins/hit.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/plugins/hit.js b/js/plugins/hit.js
index 4ddd208a..19d0d4bb 100644
--- a/js/plugins/hit.js
+++ b/js/plugins/hit.js
@@ -22,7 +22,7 @@ Flotr.addPlugin('hit', {
       }
     },
     'flotr:destroy': function() {
-      if (this.options.mouse.container) {
+      if (this.options.mouse.container&&this.mouseTrack) {
         D.remove(this.mouseTrack);
       }
       this.mouseTrack = null;