util: log: allow empty msgs (because downloader is using the "format" alternative...

diff --git a/src/allmydata/util/log.py b/src/allmydata/util/log.py
index 8f17ab534ebc85195b764c25f3e32e6036060a02..fab22f6bce3108a0680b532dea7c32c9e79aba16 100644 (file)
--- a/src/allmydata/util/log.py
+++ b/src/allmydata/util/log.py
@@ -57,5 +57,5 @@ class PrefixingLogMixin(nummedobj.NummedObj, LogMixin):
         else:
             self._prefix = "%s: " % (self.__repr__(),)
 
-    def log(self, msg, facility=None, parent=None, *args, **kwargs):
+    def log(self, msg="", facility=None, parent=None, *args, **kwargs):
         return LogMixin.log(self, self._prefix + msg, facility, parent, *args, **kwargs)