cmd.exe: Set errorlevel if CD fails.

programs/cmd/builtins.c

diff --git a/programs/cmd/builtins.c b/programs/cmd/builtins.c
index 8186695..1880682 100644
--- a/programs/cmd/builtins.c
+++ b/programs/cmd/builtins.c
@@ -1105,6 +1105,7 @@
     WINE_TRACE("Really changing to directory '%s'\n", string);
     status = SetCurrentDirectory (string);
     if (!status) {
+      errorlevel = 1;
       WCMD_print_error ();
       return;
     }