vaapi: unittest, fix CreateInvalidHandleVA
vaapi: unittest, fix CreateInvalidHandleVA

this will fix crash introduced by previous commit

uartie/libyami,yizhouwei/libyami,lizhong1008/libyami,seanvk/libyami,uartie/libyami,yizhouwei/libyami,seanvk/libyami,01org/libyami,seanvk/libyami,YuJiankang/libyami,stripes416/libyami,01org/libyami,lizhong1008/libyami,lizhong1008/libyami,YuJiankang/libyami,uartie/libyami,stripes416/libyami,01org/libyami,stripes416/libyami,YuJiankang/libyami,yizhouwei/libyami