contrib/mtn2git/mtn2git.py: Return the tree if it is was not in the cache!

diff --git a/contrib/mtn2git/mtn2git.py b/contrib/mtn2git/mtn2git.py
index 5c39e74..5968aac 100755 (executable)
--- a/contrib/mtn2git/mtn2git.py
+++ b/contrib/mtn2git/mtn2git.py
@@ -156,6 +156,8 @@ def get_and_cache_tree(ops, revision):
         old_name = cached_fifo[0]
         cached_fifo = cached_fifo[1:]
         del cached_tree[old_name]
+
+    return tree
     
 def diff_manifest(old_tree, new_tree):
     """Find additions, modifications and deletions"""