Remove sender/message_id pair after response received in resolv

Once a response for a given DNS request has been received (which
requires a matching message id), the [sender, message_id] pair
should be removed from the list of valid senders.  This makes it
so duplicate responses from the same sender are ignored.

Fixes [Bug #12838]

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/resolv.rb b/lib/resolv.rb
index d78531e174..d50940ad15 100644
--- a/lib/resolv.rb
+++ b/lib/resolv.rb
@@ -706,7 +706,7 @@ class Resolv
       end
 
       def sender_for(addr, msg)
-        @senders[[addr,msg.id]]
+        @senders.delete([addr,msg.id])
       end
 
       def close