From 3e3ec9b2c87146846869a2534ba505304654beac Mon Sep 17 00:00:00 2001
From: unarist <m.unarist@gmail.com>
Date: Thu, 25 May 2017 23:27:44 +0900
Subject: [PATCH] Fix an error on dragging into status_content component
 (#3308)

---
 app/javascript/mastodon/components/status_content.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/app/javascript/mastodon/components/status_content.js b/app/javascript/mastodon/components/status_content.js
index 1a474802a..06e25b36a 100644
--- a/app/javascript/mastodon/components/status_content.js
+++ b/app/javascript/mastodon/components/status_content.js
@@ -65,6 +65,10 @@ class StatusContent extends React.PureComponent {
   }
 
   handleMouseUp = (e) => {
+    if (!this.startXY) {
+      return;
+    }
+
     const [ startX, startY ] = this.startXY;
     const [ deltaX, deltaY ] = [Math.abs(e.clientX - startX), Math.abs(e.clientY - startY)];