small adjustments

src/parse2.cpp

@@ -353,6 +353,11 @@ namespace Parser {
         return ret;
     }
 
+    proc parse_single_expression(wchar_t* text) -> Lisp_Object* {
+        char* res = wchar_to_char(text);
+        defer {free(res);};
+        return parse_single_expression(res);
+    }
 
     proc parse_single_expression(char* text) -> Lisp_Object* {
         parser_file = standard_in;