[AtomFormat.php] Eliminate PHP Notice when running in CLI mode (#824)
[AtomFormat.php] Eliminate PHP Notice when running in CLI mode (#824)


kranack/rss-bridge,ORelio/rss-bridge,sebsauvage/rss-bridge,kranack/rss-bridge,simonbru/rss-bridge,RSS-Bridge/rss-bridge,RSS-Bridge/rss-bridge,Riduidel/rss-bridge,Riduidel/rss-bridge,Frenzie/rss-bridge,ORelio/rss-bridge,Riduidel/rss-bridge,ORelio/rss-bridge,RSS-Bridge/rss-bridge,kranack/rss-bridge,Frenzie/rss-bridge,kranack/rss-bridge,simonbru/rss-bridge