sd-bus: use "queue" message references for managing r/w message queues in connection objects
    
    Let's make use of the new concept the previous commit added.
    
    See: #4846
    (cherry picked from commit c1757a70eac0382c4837a3833d683919f6a48ed7)
    Related: CVE-2020-1712
    
    patch_name: 0320-sd-bus-use-queue-message-references-for-managing-r-w.patch
    present_in_specfile: true
    location_in_specfile: 320
    squash_commits: true