Previously, on service disappeared event the list of the known
proxy objects was cleared, but pointers to the default entity
per command family wasn’t reset. Reset default entities for
the command families to remove the dead pointers to the deleted
proxy objects.
==1325== Invalid read of size 8
==1325== at 0x4055D4: proxy_interface_is_same (dbus-proxy.c:439)
==1325== by 0x407C28: match_by_partial_name (network.c:220)
==1325== by 0x40547C: proxy_interface_find_all (dbus-proxy.c:424)
==1325== by 0x405592: proxy_property_str_completion (dbus-proxy.c:153)
==1325== by 0x407DA9: network_name_completion (network.c:241)
==1325== by 0x4E596D5: rl_completion_matches (in /usr/lib64/libreadline.so.7.0)
f1dd6b1084