$NetBSD: patch-configure,v 1.1 2024/04/19 00:09:04 gdt Exp $

Remediate "test ==" (bashism).

Reported upstream by email 20240412.

--- configure.orig	2024-04-14 13:05:56.818284356 +0000
+++ configure
@@ -6339,7 +6339,7 @@ then :
 fi
 
 
-if test x$enable_expat_1_1 == x
+if test x$enable_expat_1_1 = x
 then :
   enable_expat_1_1=yes
 fi