h264dec: do not return YAMI_SUCCESS for invalid data
h264dec: do not return YAMI_SUCCESS for invalid data

This is important to video chat user. It will tell caller the bitstream have invalid data,
caller will request key frame from peer

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