From a7e46f41f5d3a656576d30e628df64a02bdea296 Mon Sep 17 00:00:00 2001
From: Vasili Zolotov <vasili.zolotov@paperg.com>
Date: Wed, 25 Nov 2015 12:21:05 -0800
Subject: [PATCH] suppress duplicate  events

---
 lib/jpegstream.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/jpegstream.js b/lib/jpegstream.js
index 95e84effe..eaf54c2c8 100644
--- a/lib/jpegstream.js
+++ b/lib/jpegstream.js
@@ -47,8 +47,10 @@ var JPEGStream = module.exports = function JPEGStream(canvas, options, sync) {
       } else if (chunk) {
         self.emit('data', chunk);
       } else {
-        self.emit('end');
-        self.readable = false;
+        if (self.readable === true) {
+          self.emit('end');
+          self.readable = false;
+        }
       }
     });
   });