From 3aca411f788bf6db0e4eebacf4b8cf40076e11f6 Mon Sep 17 00:00:00 2001
From: Alon Zakai <alonzakai@gmail.com>
Date: Thu, 8 May 2014 16:57:34 -0700
Subject: ignore touch events that do not correspond to a tracked touch; fixes
 BananaBread crashes

---
 src/library_sdl.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/library_sdl.js b/src/library_sdl.js
index 077f72eb..d5b2b354 100644
--- a/src/library_sdl.js
+++ b/src/library_sdl.js
@@ -789,6 +789,7 @@ var LibrarySDL = {
         }
         case 'touchstart': case 'touchend': case 'touchmove': {
           var touch = event.touch;
+          if (!Browser.touches[touch.identifier]) break;
           var w = Module['canvas'].width;
           var h = Module['canvas'].height;
           var x = Browser.touches[touch.identifier].x / w;
-- 
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