Check if the variable is not None before using strip()

1 files changed, 6 insertions, 2 deletions

diff --git a/wallace/module_invitationpolicy.py b/wallace/module_invitationpolicy.py
index 6aee7b0..034b5d9 100644
--- a/wallace/module_invitationpolicy.py
+++ b/wallace/module_invitationpolicy.py
@@ -1178,7 +1178,9 @@ def send_update_notification(object, receiving_user, old=None, reply=True, sende
     orgname = organizer.name()
 
     itip_comment = None
-    comment = comment.strip()
+    if comment is not None:
+        comment = comment.strip()
+
     if sender is not None and not comment == '':
         itip_comment = _("%s commented: %s") % (_attendee_name(sender), comment)
 
@@ -1332,7 +1334,9 @@ def send_cancel_notification(object, receiving_user, deleted=False, sender=None,
         else:
             message_text += " " + _("The copy in your calendar has been marked as cancelled accordingly.")
 
-    comment = comment.strip()
+    if comment is not None:
+        comment = comment.strip()
+
     if sender is not None and not comment == '':
         message_text += "\n" + _("%s commented: %s") % (_attendee_name(sender), comment)