From 472e5fc4a9c2003f05bafb659dc6b0502c0eb3f2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Camilla=20L=C3=B6wy?= <elmindreda@glfw.org>
Date: Mon, 17 Jul 2017 23:15:48 +0200
Subject: [PATCH] Fix warning

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

diff --git a/src/input.c b/src/input.c
index f4542b4e..2a5dfef0 100644
--- a/src/input.c
+++ b/src/input.c
@@ -258,8 +258,10 @@ void _glfwInputDrop(_GLFWwindow* window, int count, const char** paths)
 
 void _glfwInputJoystick(_GLFWjoystick* js, int event)
 {
+    const int jid = (int) (js - _glfw.joysticks);
+
     if (_glfw.callbacks.joystick)
-        _glfw.callbacks.joystick(js - _glfw.joysticks, event);
+        _glfw.callbacks.joystick(jid, event);
 }
 
 void _glfwInputJoystickAxis(_GLFWjoystick* js, int axis, float value)