Backport GNetworkMonitorNetlink fixes from !313 to glib-2-56
Trivial backport of the two fixes from !313 (merged) to glib-2-56
, ignoring the two commits which tidy up the code and improve debuggability.
Trivial backport of the two fixes from !313 (merged) to glib-2-56
, ignoring the two commits which tidy up the code and improve debuggability.