From 8c0d9ec5d0c8e7744ed618992aace0d792e487f3 Mon Sep 17 00:00:00 2001
From: Lilis Iskandar <lilis@veand.co>
Date: Mon, 9 Jul 2018 21:50:57 +0800
Subject: [PATCH] sdl: error: Fix crash on certain Windows environment

Apparently caused by sdl.SetError(nil) but it doesn't
always happen.

See https://github.com/veandco/go-sdl2/issues/340

Signed-off-by: Lilis Iskandar <lilis@veand.co>
---
 sdl/error.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sdl/error.go b/sdl/error.go
index 1d281ac1..9904c09d 100644
--- a/sdl/error.go
+++ b/sdl/error.go
@@ -6,11 +6,14 @@ package sdl
 void GoSetError(const char *fmt) {
   SDL_SetError("%s", fmt);
 }
+
 */
 // #include "sdl_wrapper.h"
 import "C"
 import "errors"
 
+var emptyCString *C.char = C.CString("")
+
 // SDL error codes with their corresponding predefined strings.
 const (
 	ENOMEM      ErrorCode = C.SDL_ENOMEM      // out of memory
@@ -49,7 +52,7 @@ func SetError(err error) {
 		C.GoSetError(C.CString(err.Error()))
 		return
 	}
-	C.GoSetError(nil)
+	C.GoSetError(emptyCString)
 }
 
 // ClearError clears any previous error message.