From e79f00097a5f49eacb1d5ce19cddb00536fe25bc Mon Sep 17 00:00:00 2001
From: Philipp Wiesemann <philipp.wiesemann@arcor.de>
Date: Thu, 25 Aug 2016 22:31:44 +0200
Subject: [PATCH] Emscripten: Fixed crash if closing removed joystick (thanks,
 Sylvain!).

---
 src/joystick/emscripten/SDL_sysjoystick.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/joystick/emscripten/SDL_sysjoystick.c b/src/joystick/emscripten/SDL_sysjoystick.c
index c3becd291..c3edf4967 100644
--- a/src/joystick/emscripten/SDL_sysjoystick.c
+++ b/src/joystick/emscripten/SDL_sysjoystick.c
@@ -378,7 +378,9 @@ void
 SDL_SYS_JoystickClose(SDL_Joystick * joystick)
 {
     SDL_joylist_item *item = (SDL_joylist_item *) joystick->hwdata;
-    item->joystick = NULL;
+    if (item) {
+        item->joystick = NULL;
+    }
 }
 
 /* Function to perform any system-specific joystick related cleanup */