[hb-view] setlocale (LC_ALL, "")

For now we don't use anything from the locale, but we should default
to using $LANG, etc, if --language is not specified.  Right?

src/hb-view.c

@@ -35,6 +35,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <math.h>
+#include <locale.h>
 
 #include <glib.h>
 #include <hb-glib.h>
@@ -499,6 +500,8 @@ main (int argc, char **argv)
 {
   cairo_status_t status;
 
+  setlocale (LC_ALL, "");
+
   parse_opts (argc, argv);
 
   FT_Init_FreeType (&ft_library);