3.4-stable: Too large avatar breaks gantt when assignee is a group (#28204).

Patch by Go MAEDA.


git-svn-id: http://svn.redmine.org/redmine/branches/3.4-stable@17202 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/application_helper.rb

@@ -1424,6 +1424,7 @@ module ApplicationHelper
       if email.present?
         gravatar(email.to_s.downcase, options) rescue nil
       else
+        options[:size] &&= options[:size].to_s
         image_tag 'anonymous.png',
                   GravatarHelper::DEFAULT_OPTIONS
                     .except(:default, :rating, :ssl).merge(options)

test/unit/helpers/application_helper_test.rb

@@ -1344,6 +1344,7 @@ RAW
       assert_match tag_for_anonymous_re, avatar(nil)
       # Avatar for anonymous user
       assert_match tag_for_anonymous_re, avatar(User.anonymous)
+      assert avatar(User.anonymous, :size => 24).include?('width="24" height="24"')
     end
   end