cls: fix array overrun in rtnl_ematch_opnd2txt()
cls: fix array overrun in rtnl_ematch_opnd2txt()

Error found by coverity.

Acked-by: Thomas Graf <17c2d8920621522552b392f72d8fdb4d1e866b44@suug.ch>
Signed-off-by: Thomas Haller <16e26612e4159990a6b3691e92592e691ff74132@redhat.com>

congwang/libnl,mshirley/libnl,houstar/libnl,houstar/libnl,cfriedt/libnl,tgraf/libnl,tklauser/libnl,cyclops8456/libnl3,dsahern/libnl,thom311/libnl,UnicronNL/libnl3,greearb/libnl-ct,baloo/libnl,tklauser/libnl,UnicronNL/libnl3,HolyShitMan/libnl-1,houstar/libnl,vyos/libnl3,honsys/libnl,cfriedt/libnl,houstar/libnl,cyclops8456/libnl3,tgraf/libnl,dsahern/libnl,mshirley/libnl,baloo/libnl,thom311/libnl,greearb/libnl-ct,cyclops8456/libnl3,dsahern/libnl,vyos/libnl3,honsys/libnl,kolyshkin/libnl,tgraf/libnl,HolyShitMan/libnl-1,congwang/libnl,honsys/libnl,thom311/libnl,baloo/libnl,congwang/libnl,vyos/libnl3,dsahern/libnl,UnicronNL/libnl3,mshirley/libnl,baloo/libnl,honsys/libnl,vyos/libnl3,UnicronNL/libnl3,greearb/libnl-ct,tklauser/libnl,claudelee/libnl,kolyshkin/libnl,tklauser/libnl,HolyShitMan/libnl-1,cfriedt/libnl,claudelee/libnl,kolyshkin/libnl,mshirley/libnl,HolyShitMan/libnl-1,tgraf/libnl,congwang/libnl,cyclops8456/libnl3,cfriedt/libnl,claudelee/libnl,kolyshkin/libnl,claudelee/libnl