[PATCH] fix test case output (display_trees)

Hi.

This one was a mean one. It made me search for a mistake in a new test
case for quite some time, before I suspected the existing stuff to be
broken - especially since I am new to the tests and to Python.

Bye,

        Benjamin.

Patch from Benjamin Pflugmann <benjamin-svn-log@pflugmann.de>

* subversion/tests/clients/cmdline/svntest/actions.py (display_trees):
  Really print actual tree instead of expected tree as ACTUAL OUTPUT TREE.

Index: subversion/tests/clients/cmdline/svntest/actions.py
===================================================================
--- subversion/tests/clients/cmdline/svntest/actions.py (revision 3813)
+++ subversion/tests/clients/cmdline/svntest/actions.py (working copy)
@@ -537,7 +537,7 @@
     tree.dump_tree(expected)
   if actual is not None:
     print 'ACTUAL', label + ':'
- tree.dump_tree(expected)
+ tree.dump_tree(actual)
 
 
 def display_lines(message, label, expected, actual):