Task #7432: Removed superfluous close() calls, as connection.close() catches everything

LCS/MessageBus/src/MsgBus.cc

@@ -47,7 +47,8 @@ namespace LOFAR {
 
     try {
       // Make sure all requests are finished
-      itsReceiver.close()
+
+      // connection.close() closes all senders, receivers, and sessions as well.
       itsConnection.close();
     } catch(const qpid::types::Exception &ex) {
       LOG_FATAL_STR("Exception in destructor, cannot guarantee message delivery: " << ex.what());
@@ -123,7 +124,8 @@ namespace LOFAR {
 
     try {
       // Make sure all requests are finished
-      itsSender.close();
+
+      // connection.close() closes all senders, receivers, and sessions as well.
       itsConnection.close();
     } catch(const qpid::types::Exception &ex) {
       LOG_FATAL_STR("Exception in destructor, cannot guarantee message delivery: " << ex.what());