Add cask empty

jcs090218 · jcs090218 · commit 8f090dde480c · 2021-01-21T19:00:46.000+08:00
diff --git a/Makefile b/Makefile
@@ -34,6 +34,8 @@ windows-compile:
 	-f batch-byte-compile $(DAP-GENERAL) $(DAP-CLIENTS)
 
 unix-ci: clean build unix-compile test
+
+windows-ci: CASK=
 windows-ci: clean windows-compile test
 
 clean:
