$NetBSD: patch-configure,v 1.2 2023/02/11 07:49:55 adam Exp $

Portablility fixes.

--- configure.orig	2023-02-11 02:00:41.000000000 +0000
+++ configure
@@ -3398,7 +3398,7 @@ arith_code=0
 # Check whether --with-arith was given.
 if test "${with_arith+set}" = set; then :
   withval=$with_arith;
-	if test $withval == yes; then
+	if test $withval = yes; then
 	   arith_code=1
 	fi
 
@@ -4168,7 +4168,7 @@ fi
 
 fi
 
-if test $arith_code == 1 -a $jpegoptim_cv_arith_code_support = yes; then
+if test $arith_code = 1 -a $jpegoptim_cv_arith_code_support = yes; then
   arith_code_status="Enabled"
   $as_echo "#define HAVE_ARITH_CODE 1" >>confdefs.h
 
@@ -4226,7 +4226,7 @@ $as_echo "$jpegoptim_cv_extension_settin
 echo "--------------------------------------------------"
 echo "Extension settings: $extension_settings_status"
 echo "Arithmetic coding: $arith_code_status"
-if test $arith_code == 0 -a "$jpegoptim_cv_arith_code_support" == "yes"; then
+if test $arith_code = 0 -a "$jpegoptim_cv_arith_code_support" = "yes"; then
    echo "(use --with-arith to enable Arithmetic coding support)"
 fi
 echo "--------------------------------------------------"