[FIX] empty services string shown after bus notification

hotel_calendar/models/inherited_hotel_reservation.py

@@ -426,7 +426,7 @@ class HotelReservation(models.Model):
             'channel_type': self.channel_type,
             'board_service_name': self.board_service_room_id.hotel_board_service_id.name,
             'services': [service.product_id.name for service in self.service_ids
-                         if service.product_id.is_popoverable],
+                         if service.product_id.is_popoverable] or False,
         }
 
     @api.multi

hotel_calendar/static/src/xml/hotel_calendar_templates.xml

@@ -132,7 +132,7 @@
 	</div>
 	<div class="row row-eq-height mt-10">
 		<div class="col-sm-12">
-			<t t-if="services != False">
+			<t t-if="services">
 				<i class="fa fa-exclamation-circle fa-pull-left"/> This reservation requires: <t t-esc="services"/>
 			</t>
 			<t t-if="splitted">