Merged r11446 from trunk (#13232).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.2-stable@11596 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/messages_controller.rb

@@ -123,7 +123,7 @@ class MessagesController < ApplicationController
 
 private
   def find_message
-    find_board
+    return unless find_board
     @message = @board.messages.find(params[:id], :include => :parent)
     @topic = @message.root
   rescue ActiveRecord::RecordNotFound
@@ -135,5 +135,6 @@ private
     @project = @board.project
   rescue ActiveRecord::RecordNotFound
     render_404
+    nil
   end
 end

test/functional/messages_controller_test.rb

@@ -81,6 +81,11 @@ class MessagesControllerTest < ActionController::TestCase
     assert_response 404
   end
 
+  def test_show_message_from_invalid_board_should_respond_with_404
+    get :show, :board_id => 999, :id => 1
+    assert_response 404
+  end
+
   def test_get_new
     @request.session[:user_id] = 2
     get :new, :board_id => 1