Fix for issue in new parser where no error would be reported if the very

first token is an error. Fixes #1239.

fish_tests.cpp

@@ -2453,6 +2453,7 @@ static void test_new_parser_errors(void)
     tests[] =
     {
         {L"echo 'abc", parse_error_tokenizer_unterminated_quote},
+        {L"'", parse_error_tokenizer_unterminated_quote},
         {L"echo (abc", parse_error_tokenizer_unterminated_subshell},
         
         {L"end", parse_error_unbalancing_end},