log: fix klocwork complain about NPD.FUNC.MUST
log: fix klocwork complain about NPD.FUNC.MUST

This just make klocwork happy. it's not a really issue.

yizhouwei/libyami,clearlylin/libyami,BtbN/libyami,BtbN/libyami,yizhouwei/libyami,chivakker/libyami,BtbN/libyami,xuguangxin/libyami,xuguangxin/libyami,andyLiuChina/libyami,clearlylin/libyami,01org/libyami,stripes416/libyami,YuJiankang/libyami,andyLiuChina/libyami,andyLiuChina/libyami,dspmeng/libyami,bluceldg/libyami,YuJiankang/libyami,uartie/libyami,seanvk/libyami,seanvk/libyami,halleyzhao/libyami,01org/libyami,dspmeng/libyami,chivakker/libyami,YuJiankang/libyami,seanvk/libyami,lizhong1008/libyami,lizhong1008/libyami,uartie/libyami,clearlylin/libyami,bluceldg/libyami,stripes416/libyami,BtbN/libyami,dspmeng/libyami,halleyzhao/libyami,01org/libyami,yizhouwei/libyami,zhaobob/libyami,uartie/libyami,chivakker/libyami,andyLiuChina/libyami,lizhong1008/libyami,halleyzhao/libyami,halleyzhao/libyami,xuguangxin/libyami,xuguangxin/libyami,bluceldg/libyami,zhaobob/libyami,stripes416/libyami,zhaobob/libyami,bluceldg/libyami