$NetBSD: patch-contrib_GambitREPL_make-keys,v 1.1 2023/04/26 20:53:23 nikita Exp $

Fix portability.

--- contrib/GambitREPL/make-keys.orig	2023-04-26 22:15:47.332909563 +0200
+++ contrib/GambitREPL/make-keys	2023-04-26 22:16:36.834296594 +0200
@@ -33,7 +33,7 @@
 
   FONT_SIZE=`expr \( ${KEY_HEIGHT} \* 1000 \) / 1625`
 
-  if [ "${IMAGE}" == "" ]; then
+  if [ "${IMAGE}" = "" ]; then
 
     DRAW_IMAGE=""