$NetBSD: patch-configure,v 1.8 2021/02/10 11:55:22 nia Exp $

Shell portability.

--- configure.orig	2021-01-24 13:41:01.000000000 +0000
+++ configure
@@ -804,7 +804,7 @@ case $_host_os in
 			DEFINES="$DEFINES -DBSPF_UNIX -DMACOS_KEYS"
 			MODULES="$MODULES $SRC/unix"
 			INCLUDES="$INCLUDES -I$SRC/unix"
-			if test "$have_clang" == yes; then
+			if test "$have_clang" = yes; then
 				CXXFLAGS="$CXXFLAGS -Wno-poison-system-directories"
 			fi
 			;;