idiag: fix set of identifying properties for idiag_msg_obj
idiag: fix set of identifying properties for idiag_msg_obj

The key for a struct idiag_msg_obj should be
'family x src x dst x sport x dport'.

http://lists.infradead.org/pipermail/libnl/2014-November/001768.html

Signed-off-by: Thomas Haller <16e26612e4159990a6b3691e92592e691ff74132@redhat.com>

thom311/libnl,claudelee/libnl,dsahern/libnl,kolyshkin/libnl,tgraf/libnl,tklauser/libnl,greearb/libnl-ct,tgraf/libnl,cfriedt/libnl,honsys/libnl,kolyshkin/libnl,tgraf/libnl,greearb/libnl-ct,dsahern/libnl,tgraf/libnl,claudelee/libnl,HolyShitMan/libnl-1,cfriedt/libnl,baloo/libnl,cfriedt/libnl,HolyShitMan/libnl-1,mshirley/libnl,houstar/libnl,congwang/libnl,honsys/libnl,mshirley/libnl,greearb/libnl-ct,baloo/libnl,kolyshkin/libnl,thom311/libnl,thom311/libnl,honsys/libnl,congwang/libnl,tklauser/libnl,tklauser/libnl,HolyShitMan/libnl-1,congwang/libnl,kolyshkin/libnl,congwang/libnl,cfriedt/libnl,claudelee/libnl,baloo/libnl,tklauser/libnl,houstar/libnl,dsahern/libnl,HolyShitMan/libnl-1,mshirley/libnl,honsys/libnl,houstar/libnl,mshirley/libnl,houstar/libnl,dsahern/libnl,claudelee/libnl,baloo/libnl