From 7daaf1252a651271f170abc0a7a0f532778aad51 Mon Sep 17 00:00:00 2001
From: Viraj Mahesh <virajmahesh@gmail.com>
Date: Fri, 30 May 2014 09:51:30 +0400
Subject: Do nothing when blank action passed

---
 objects.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'objects.js')

diff --git a/objects.js b/objects.js
index fb1804e..4b1b359 100644
--- a/objects.js
+++ b/objects.js
@@ -3741,7 +3741,9 @@ SpriteMorph.prototype.doScreenshot = function (imgSource, data) {
         stage = this.parentThatIsA(StageMorph),
         costume;
     data = this.newCostumeName(data);
-    //data = this.newCostumeNameCached(data); // Uncomment to profile
+    if (imgSource[0] === undefined) {
+        return;
+    }
     if (imgSource[0] === "pen trails") {
         canvas = stage.trailsCanvas;
         costume = new Costume(canvas, data).copy(); // Copy is required to prevent mutation
-- 
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