add the missing masking to GetSymbols

libwccl/ops/functions/tset/getsymbols.cpp

@@ -36,6 +36,7 @@ GetSymbols::BaseRetValPtr GetSymbols::apply_internal(const FunExecContext& conte
 	foreach (const Corpus2::Lexeme& lexeme, token->lexemes()) {
 		tset->combine_with(lexeme.tag());
 	}
+	tset->tag_ref().mask_with(mask_);
 	return tset;
 }