Made listdirinfo more robust

fs/base.py

@@ -325,9 +325,15 @@ class FS(object):
             if not full or absolute:
                 return pathjoin(path, p)
 
-        return [(p, self.getinfo(get_path(p)))
-                    for p in self._listdir_helper(path,
-                                                  widcard=wildcard,
+        def getinfo(p):
+            try:
+                return self.getinfo(get_path(p))
+            except FSError:
+                return {}
+
+        return [(p, getinfo(get_path(p)))
+                    for p in self.listdir(path,                                          
+                                          wildcard=wildcard,
                                           full=full,
                                           absolute=absolute,
                                           dirs_only=dirs_only,