network: Fix invalid read while removing device

network: Fix invalid read while removing device

Invalid read of size 8
   at 0x42F4B2: connection_unregister (connection.c:643)
   by 0x466CE6: service_shutdown (service.c:174)
   by 0x467B70: remove_service (device.c:963)
   by 0x32C3863CAC: g_slist_foreach (in /usr/lib64/libglib-2.0.so.0.3400.2)
   by 0x32C3863CCA: g_slist_free_full (in /usr/lib64/libglib-2.0.so.0.3400.2)
   by 0x46CABC: device_remove (device.c:2331)
   by 0x45E229: adapter_remove_device.constprop.44 (adapter.c:1049)
   by 0x45E31D: remove_device (adapter.c:2134)
   by 0x40CC80: process_message.isra.4 (object.c:258)
   by 0x32C641D9C4: ??? (in /usr/lib64/libdbus-1.so.3.7.2)
   by 0x32C640FC1F: dbus_connection_dispatch (in /usr/lib64/libdbus-1.so.3.7.2)
   by 0x40A807: message_dispatch (mainloop.c:76)
 Address 0x54e6e38 is 8 bytes inside a block of size 16 free'd
   at 0x4A077E6: free (vg_replace_malloc.c:446)
   by 0x32C384D79E: g_free (in /usr/lib64/libglib-2.0.so.0.3400.2)
   by 0x40DCA9: remove_interface (object.c:656)
   by 0x40DF09: g_dbus_unregister_interface (object.c:1413)
   by 0x466CE6: service_shutdown (service.c:174)
   by 0x467B70: remove_service (device.c:963)
   by 0x32C3863CAC: g_slist_foreach (in /usr/lib64/libglib-2.0.so.0.3400.2)
   by 0x32C3863CCA: g_slist_free_full (in /usr/lib64/libglib-2.0.so.0.3400.2)
   by 0x46CABC: device_remove (device.c:2331)
   by 0x45E229: adapter_remove_device.constprop.44 (adapter.c:1049)
   by 0x45E31D: remove_device (adapter.c:2134)
   by 0x40CC80: process_message.isra.4 (object.c:258)