spec/module.dd: Specify that Module may contain zero DeclDefs

CyberShadow · Geod24 · commit f231d6de4fc0 · 2021-07-05T09:32:59.000+09:00
diff --git a/spec/module.dd b/spec/module.dd
@@ -6,6 +6,7 @@ $(HEADERNAV_TOC)
 
 $(GRAMMAR
 $(GNAME Module):
+    $(GLINK ModuleDeclaration)
     $(GLINK ModuleDeclaration) $(GLINK DeclDefs)
     $(GLINK DeclDefs)
 
