No reannouncing self

Signed-off-by: Rahix <rahix@rahix.de>

bc.lua

@@ -147,7 +147,9 @@ function BaseControl:finalize(waits, timeout)
     self = BaseControl:new()
   end
 
-  -- Announce own nouns and verbs
+  -- Announce own nouns and verbs if this is the first
+  -- call to finalize() and we have registered names
+  if not self.live then
     local nouns, verbs = self:nouns(true), self:verbs(true)
     if #nouns > 0 or #verbs > 0 then
       self.network:broadcast{
@@ -156,6 +158,7 @@ function BaseControl:finalize(waits, timeout)
         verbs=verbs,
       }
     end
+  end
 
   if #(waits or {}) ~= 0 then
     -- Wait for requested names