scm: fix broken main repository 'root' link

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9613 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/repositories/_breadcrumbs.html.erb

@@ -1,5 +1,7 @@
 <%= link_to(@repository.identifier.present? ? h(@repository.identifier) : 'root', 
-      :action => 'show', :id => @project, :repository_id => @repository.identifier_param, :path => '', :rev => @rev) %>
+      :action => 'show', :id => @project,
+      :repository_id => @repository.identifier_param,
+      :path => nil, :rev => @rev) %>
 <%
 dirs = path.split('/')
 if 'file' == kind

test/functional/repositories_subversion_controller_test.rb

@@ -67,6 +67,9 @@ class RepositoriesSubversionControllerTest < ActionController::TestCase
       assert_tag 'input', :attributes => {:name => 'rev'}
       assert_tag 'a', :content => 'Statistics'
       assert_tag 'a', :content => 'Atom'
+      assert_tag :tag => 'a',
+                 :attributes => {:href => '/projects/subproject1/repository'},
+                 :content => 'root'
     end
 
     def test_show_non_default