lib: Fix printf warnings.
lib: Fix printf warnings.

nuumio/cmocka,VladimirTyrin/cmocka,JonathonReinhart/cmocka,jschmidlapp/cmocka,clibs/cmocka,chadversary/cmocka,jschmidlapp/cmocka,jhrozek/cmocka,lsjostro/cmocka,Odie/cmocka,akikoskinen/cmocka,aleksandr-vin/cmock,aleksandr-vin/cmock,tyc/cmocka,VladimirTyrin/cmocka,lsjostro/cmocka,linuxmaniac/cmocka,dsch/cmocka,nuumio/cmocka,Odie/cmocka,JonathonReinhart/cmocka,tyc/cmocka,nuumio/cmocka,jhrozek/cmocka,clibs/cmocka,jschmidlapp/cmocka,linuxmaniac/cmocka,jamesmunns/CMocka,wingyplus/cmocka,dsch/cmocka,wingyplus/cmocka,jamesmunns/CMocka,jhrozek/cmocka,chadversary/cmocka,tyc/cmocka,Odie/cmocka