From c4e7e65acb76dae671fd0e51a7742aeaf7ed9161 Mon Sep 17 00:00:00 2001
From: Max Limper <max.limper@igd.fraunhofer.de>
Date: Mon, 9 Jul 2018 12:21:46 +0200
Subject: [PATCH] fixed #177 (explicit empty mtl base dir given)

---
 tiny_obj_loader.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/tiny_obj_loader.h b/tiny_obj_loader.h
index 9e43a7d..7b9f342 100644
--- a/tiny_obj_loader.h
+++ b/tiny_obj_loader.h
@@ -1736,9 +1736,8 @@ bool LoadObj(attrib_t *attrib, std::vector<shape_t> *shapes,
     return false;
   }
 
-  std::string baseDir;
-  if (mtl_basedir) {
-    baseDir = mtl_basedir;
+  std::string baseDir = mtl_basedir ? mtl_basedir : "";
+  if (!baseDir.empty()) {    
 #ifndef _WIN32
     const char dirsep = '/';
 #else