network: Fix invalid read on exit

Invalid read of size 1
   at 0x4A09D91: strcmp (mc_replace_strmem.c:729)
   by 0x4C6C768: g_str_equal (in /usr/lib64/libglib-2.0.so.0.3200.4)
   by 0x1446B7: connection_disconnect (connection.c:451)
   by 0x141DEA: disconnect_profile (manager.c:120)
   by 0x4C96C5C: g_slist_foreach (in /usr/lib64/libglib-2.0.so.0.3200.4)
   by 0x182B2D: device_remove (device.c:2034)
   by 0x178809: adapter_remove (adapter.c:2902)
   by 0x173902: manager_cleanup (manager.c:256)
   by 0x1217B9: main (main.c:550)
 Address 0x0 is not stack'd, malloc'd or (recently) free'd

In addition remove owner since it is no longer possible to track the
owner as this is done in the core.
1 file changed