From 82b2c849f0873b52a9820b7cae9395b4f7f8e654 Mon Sep 17 00:00:00 2001
From: Sylvain Becker <sylvain.becker@gmail.com>
Date: Mon, 21 Jan 2019 23:41:43 +0100
Subject: [PATCH] Fixed bug 4024 - GameController error "Unexpected controller
 element"

If mapping string is terminated with a comma, there is no more values to parse.
---
 src/joystick/SDL_gamecontroller.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/joystick/SDL_gamecontroller.c b/src/joystick/SDL_gamecontroller.c
index 9ac3af5fa..15af7ab9b 100644
--- a/src/joystick/SDL_gamecontroller.c
+++ b/src/joystick/SDL_gamecontroller.c
@@ -676,8 +676,10 @@ SDL_PrivateGameControllerParseControllerConfigString(SDL_GameController *gamecon
         pchPos++;
     }
 
-    SDL_PrivateGameControllerParseElement(gamecontroller, szGameButton, szJoystickButton);
-
+    /* No more values if the string was terminated by a comma. Don't report an error. */
+    if (szGameButton[0] != '\0' || szJoystickButton[0] != '\0') {
+        SDL_PrivateGameControllerParseElement(gamecontroller, szGameButton, szJoystickButton);
+    }
 }
 
 /*