Avoid parsing of air-by-date results with non air-by-date shows

sickbeard/name_parser/parser.py

@@ -1,22 +1,22 @@
 # coding=utf-8
-
+#
 # Author: Nic Wolfe <nic@wolfeden.ca>
 # URL: http://code.google.com/p/sickbeard/
 #
-# This file is part of SickRage.
+# This file is part of Medusa.
 #
-# SickRage is free software: you can redistribute it and/or modify
+# Medusa is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
-# SickRage is distributed in the hope that it will be useful,
+# Medusa is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
-# along with SickRage. If not, see <http://www.gnu.org/licenses/>.
+# along with Medusa. If not, see <http://www.gnu.org/licenses/>.
 
 from __future__ import unicode_literals
 
@@ -240,8 +240,9 @@ def _parse_string(self, name):  # pylint: disable=too-many-locals, too-many-bran
             new_season_numbers = []
             new_absolute_numbers = []
 
-            # if we have an air-by-date show then get the real season/episode numbers
-            if bestResult.is_air_by_date:
+            # if we have an air-by-date show and the result is air-by-date,
+            # then get the real season/episode numbers
+            if bestResult.show.air_by_date and bestResult.is_air_by_date:
                 airdate = bestResult.air_date.toordinal()
                 main_db_con = db.DBConnection()
                 sql_result = main_db_con.select(