From d203e4dc9c0ed55ec46ad6a2539aee224eba0b39 Mon Sep 17 00:00:00 2001
From: twinaphex <libretro@gmail.com>
Date: Sun, 22 Oct 2017 05:21:31 +0200
Subject: [PATCH] video_shader_driver_resolve_parameters - fix crash at startup
 with MSVC

---
 gfx/video_shader_parse.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gfx/video_shader_parse.c b/gfx/video_shader_parse.c
index ca0929f005..2ef331af88 100644
--- a/gfx/video_shader_parse.c
+++ b/gfx/video_shader_parse.c
@@ -538,7 +538,8 @@ bool video_shader_resolve_parameters(config_file_t *conf,
       /* If that doesn't work, fallback to the old path.
        * Ideally, we'd get rid of this path sooner or later. */
 #endif
-      file = filestream_open(path, RFILE_MODE_READ_TEXT, -1);
+	  if (!string_is_empty(path))
+         file = filestream_open(path, RFILE_MODE_READ_TEXT, -1);
 
       if (!file)
       {