adapter.rb in amq-client-0.7.0.alpha18

- old
+ new

@@ -215,10 +215,16 @@
       def disconnect(reply_code = 200, reply_text = "Goodbye", &block)
         @intentionally_closing_connection = true
 
         self.on_disconnection(&block)
         closing!
-        self.connection.close(reply_code, reply_text)
+
+        # ruby-amqp/amqp#66, MK.
+        if self.connection
+          self.connection.close(reply_code, reply_text)
+        else
+          self.disconnection_successful
+        end
       end
       alias close disconnect
 
       # Sends AMQ protocol header (also known as preamble).
       #