cache: hold a reference to the cache ops while a cache is provided over it
cache: hold a reference to the cache ops while a cache is provided over it

Signed-off-by: Thomas Graf <17c2d8920621522552b392f72d8fdb4d1e866b44@suug.ch>

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