Fixed: 'Delete' link on LDAP list has no effect (#4530).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3282 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/auth_sources/list.rhtml

@@ -22,6 +22,7 @@
     <td class="buttons">
     	<%= link_to l(:button_test), :action => 'test_connection', :id => source %>
     	<%= link_to l(:button_delete), { :action => 'destroy', :id => source },
+    																										:method => :post,
                                                         :confirm => l(:text_are_you_sure),
                                                         :class => 'icon icon-del',
                                                         :disabled => source.users.any? %>