Call setlocale in markup-parse test

This is necessary to make utf-8 text come out properly.

glib/tests/markup-parse.c

@@ -1,6 +1,7 @@
 #undef G_DISABLE_ASSERT
 #undef G_LOG_DOMAIN
 
+#include <locale.h>
 #include <string.h>
 #include <stdio.h>
 #include <glib.h>
@@ -261,6 +262,8 @@ main (int argc, char *argv[])
   const gchar *name;
   gchar *path;
 
+  setlocale (LC_ALL, "");
+
   g_test_init (&argc, &argv, NULL);
 
   /* allow to easily generate expected output for new test cases */