... as soon as we updated multicastsender. Changes are minimal and mostly
cosmetic - use 'explcit' and 'nullptr' where appropriate, make a socket
data-member and not a pointer, move the 'datagram's declaration outside
of a loop.
Task-number: QTBUG-60628
Change-Id: Icfa46e6d2844c40a605f2f4066847594943a8ea8
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
553b6ab9cd