updated for version 7.3.005
Problem:    Crash when using undotree(). (Christian Brabandt)
Solution:   Increase the list reference count.  Add a test for undotree()
            (Lech Lorens)
diff --git a/src/testdir/test61.in b/src/testdir/test61.in
index f9a1574..8883163 100644
--- a/src/testdir/test61.in
+++ b/src/testdir/test61.in
@@ -4,6 +4,10 @@
 Also tests :earlier and :later.
 
 STARTTEST
+:echo undotree().entries
+ENDTEST
+
+STARTTEST
 :" Delete three characters and undo
 Gx:set ul=100
 x:set ul=100