$NetBSD$

Fixes portability failure.

--- utils/lit/utils/check-sdist.orig	2013-05-04 12:14:35.000000000 +0000
+++ utils/lit/utils/check-sdist
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-if [ $# == 1 ]; then
+if [ $# = 1 ]; then
     cd $1
 fi
 
