Fix: due to a bad if in Lockable::lock did not traverse the heirarchy as expected

app/views/dmsf/show.html.erb

@@ -154,8 +154,8 @@
 				<%= file.last_revision.updated_at.strftime("%Y-%m-%d %H:%M") %>
 				<% if file.locked_for_user? %>
 					<%= link_to(image_tag("locked.png", :plugin => :redmine_dmsf), 
-							{:controller => "users", :action => "show", :id => file.locks[0].user },
-							:title => l(:title_locked_by_user, :user => file.locks[0].user.to_s)) %>
+							{:controller => "users", :action => "show", :id => file.lock.reverse[0].user },
+							:title => l(:title_locked_by_user, :user => file.lock.reverse[0].user.to_s)) %>
         		<% elsif file.locked? %>
 					<%= image_tag("lockedbycurrent.png", :title => l(:title_locked_by_you), :plugin => :redmine_dmsf) %>
 				<% end %>

lib/redmine_dmsf/lockable.rb

@@ -16,7 +16,7 @@ module RedmineDmsf
         }
       end
       if tree
-        ret = ret | (folder.locks || folder.lock) unless folder.nil?
+        ret = ret | (folder.locks.empty? ? folder.lock : folder.locks) unless folder.nil?
       end
       return ret
     end