BIND 10 master, updated. eedd7668751d8b5e3d47c8f233cf1d51e34ebd8e [master] fix for bsd/osx timeout error

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- Log -----------------------------------------------------------------
commit eedd7668751d8b5e3d47c8f233cf1d51e34ebd8e
Author: Jelte Jansen <jelte at isc.org>
Date:   Wed Sep 5 11:21:31 2012 +0200

    [master] fix for bsd/osx timeout error
    
    Check if socket has not been closed after timeout in read
    
    discussed on jabber

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Summary of changes:
 src/lib/asiodns/tcp_server.cc |    7 +++++++
 1 file changed, 7 insertions(+)

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diff --git a/src/lib/asiodns/tcp_server.cc b/src/lib/asiodns/tcp_server.cc
index ed3f28c..3442de9 100644
--- a/src/lib/asiodns/tcp_server.cc
+++ b/src/lib/asiodns/tcp_server.cc
@@ -161,6 +161,13 @@ TCPServer::operator()(asio::error_code ec, size_t length) {
             CORO_YIELD return;
         }
 
+        // Due to possible timeouts and other bad behaviour, after the
+        // timely reads are done, there is a chance the socket has
+        // been closed already. So before we move on to the actual
+        // processing, check that, and stop if so.
+        if (!socket_->is_open()) {
+            CORO_YIELD return;
+        }
 
         // Create an \c IOMessage object to store the query.
         //