$NetBSD: patch-src_tiff_configure,v 1.2 2018/05/02 11:33:44 adam Exp $

Fix shell script portability

--- src/tiff/configure.orig	2014-06-14 21:48:48.000000000 +0000
+++ src/tiff/configure
@@ -18145,7 +18145,7 @@ if test "${with_jpeg12_lib+set}" = set; 
 fi
 
 
-if test "x$enable_jpeg12" == "xyes" ; then
+if test "x$enable_jpeg12" = "xyes" ; then
 
   if test "x$with_jpeg12_lib" != "x" ; then
     LIBS="$with_jpeg12_lib $LIBS"