nl_object_clone: properly clone ce_mask field
nl_object_clone: properly clone ce_mask field

based on my finding, ce_mask needs to be identical on clones; otherwise
some functions (like "dump") will treat clones differently.

dsahern/libnl,tklauser/libnl,chitranshi/libnl,greearb/libnl-ct,cyclops8456/libnl3,xin3liang/platform_external_libnl,chitranshi/libnl,thom311/libnl,yinquan529/platform-external-libnl,gxk/libnl,dsahern/libnl,Distrotech/libnl,UnicronNL/libnl3,yinquan529/platform-external-libnl,congwang/libnl,baloo/libnl,HolyShitMan/libnl-1,Distrotech/libnl,UnicronNL/libnl3,chitranshi/libnl,vyos/libnl3,cfriedt/libnl,socketpair/libnl,tgraf/libnl,cyclops8456/libnl3,cfriedt/libnl,houstar/libnl,kolyshkin/libnl,teto/libnl_old,vyos/libnl3,gxk/libnl,claudelee/libnl,HolyShitMan/libnl-1,gxk/libnl,cyclops8456/libnl3,HolyShitMan/libnl-1,claudelee/libnl,Omegaphora/external_libnl,greearb/libnl-ct,thom311/libnl,houstar/libnl,mshirley/libnl,cfriedt/libnl,chitranshi/libnl,tgraf/libnl,xin3liang/platform_external_libnl,dsahern/libnl,UnicronNL/libnl3,houstar/libnl,geekboxzone/lollipop_external_libnl,Distrotech/libnl,CyanogenMod/android_external_libnl,honsys/libnl,karlhiramoto/libnl,karlhiramoto/libnl,Omegaphora/external_libnl,baloo/libnl,thiz11/platform_external_libnl,vyos/libnl3,teto/libnl_old,bcopeland/android_libnl,mshirley/libnl,CyanogenMod/android_external_libnl,android-ia/platform_external_libnl,kolyshkin/libnl,android-ia/platform_external_libnl,thiz11/platform_external_libnl,congwang/libnl,dsahern/libnl,congwang/libnl,geekboxzone/mmallow_external_libnl,tklauser/libnl,teto/libnl_old,baloo/libnl,claudelee/libnl,baloo/libnl,mshirley/libnl,tgraf/libnl,Distrotech/libnl,UnicronNL/libnl3,socketpair/libnl,greearb/libnl-ct,geekboxzone/lollipop_external_libnl,socketpair/libnl,HolyShitMan/libnl-1,honsys/libnl,geekboxzone/mmallow_external_libnl,thom311/libnl,honsys/libnl,mshirley/libnl,honsys/libnl,karlhiramoto/libnl,congwang/libnl,cyclops8456/libnl3,vyos/libnl3,claudelee/libnl,tgraf/libnl,cfriedt/libnl,tklauser/libnl,houstar/libnl,bcopeland/android_libnl,tklauser/libnl,kolyshkin/libnl,teto/libnl_old,kolyshkin/libnl,karlhiramoto/libnl