fix(imap): Log MessageMapper not finding full text

Signed-off-by: Christoph Wurst <[email protected]>

lib/IMAP/MessageMapper.php

@@ -492,6 +492,7 @@ public function getFullText(Horde_Imap_Client_Socket $client,
 		}
 
 		if (($message = $result->first()) === null) {
+			\OCP\Log\logger('mail')->info('Found ' . $result->count() . ' results');
 			return null;
 		}