https://sourceforge.net/p/toppler/bugs/17/
--- main.cc.orig	2012-12-22 05:02:06.000000000 -0600
+++ main.cc	2016-12-05 21:41:58.000000000 -0600
@@ -96,7 +96,7 @@
 
   DIR *dir = opendir("locale");
   bindtextdomain("toppler", dir == NULL ? LOCALEDIR : "locale");
-  closedir(dir);
+  if (dir != NULL) closedir(dir);
   textdomain("toppler");
 #endif