Fix dispatcher non-posix-fs bug

Author: pjz

aspen/dispatcher.py

@@ -11,6 +11,7 @@
 
 import mimetypes
 import os
+import posixpath
 
 from . import Response
 from .backcompat import namedtuple
@@ -120,7 +121,7 @@ def get_wildleaf_fallback():
         wild_nonleaf_ns = [ n for n in maybe_wild_nodes if not is_leaf_node(n) ]
 
         # store all the fallback possibilities
-        remaining = reduce(traverse, nodepath[depth:])
+        remaining = reduce(posixpath.join, nodepath[depth:])
         for n in wild_leaf_ns:
             wildwildvals = wildvals.copy()
             k, v = strip_matching_ext(n[1:-4], remaining)