put an empty word list in the subtype box if possible

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1272 0fc631ac-6414-0410-93d0-97cfa31319b6

data/magic.mse-game/script

@@ -488,6 +488,8 @@ sub_type_filter := {
 		(if length(parts) > 0 then
 			# Add a new box at the end
 			"<soft>{lang.subtype_separator}</soft><word-list-{list_type_rest}></word-list-{list_type_rest}>"
+		 else
+			"<word-list-{list_type_first}></word-list-{list_type_first}>"
 		)
 	) else input # do nothing
 }