From ae6ff3e104fd6127d8ae7fa2a84bb451c76f10e9 2015-09-12 10:58:53
From: Jean-Philippe Lang <jp_lang@yahoo.fr>
Date: 2015-09-12 10:58:53
Subject: [PATCH] Merged r14499 (#20454).

git-svn-id: http://svn.redmine.org/redmine/branches/3.0-stable@14549 e93f8b46-1217-0410-a6f0-8f06a7374b81

---

diff --git a/app/models/mail_handler.rb b/app/models/mail_handler.rb
index d4e57c7..c2909b9 100644
--- a/app/models/mail_handler.rb
+++ b/app/models/mail_handler.rb
@@ -525,6 +525,8 @@ class MailHandler < ActionMailer::Base
 
   def find_assignee_from_keyword(keyword, issue)
     keyword = keyword.to_s.downcase
+    return nil if keyword.blank?
+
     assignable = issue.assignable_users
     assignee = nil
     assignee ||= assignable.detect {|a|