the funcretnode field keeps a reference to this temp even after we
    assign it to the call-by-reference return parameter if it is deleted
    by changing it into a normal temp (after which it will be freed when
    the result of the call node is used), because in that case getcopy
    for the callnode must copy this reference after copying the
    tempdeletenode in order to reset tempinfo^.hookoncopy (mantis #29891)

git-svn-id: trunk@33569 -