when unicode strings are passed as change_hook_auth parameters for We…

…bStatus hooks (when using JSON files as configuration for example), the __init__ method fails, just fix that

master/buildbot/status/web/baseweb.py

@@ -337,7 +337,7 @@ def __init__(self, http_port=None, distrib_port=None, allowForce=None,
         if change_hook_auth is not None:
             self.change_hook_auth = []
             for checker in change_hook_auth:
-                if isinstance(checker, str):
+                if isinstance(checker, str) or isinstance(checker, unicode):
                     try:
                         checker = strcred.makeChecker(checker)
                     except Exception, error: