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-rw-r--r--src/library_sdl.js1
1 files changed, 1 insertions, 0 deletions
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;