check protobuf component before using
check protobuf component before using

Change-Id: I458252dddb0e2d6ce716488fa92f4186216e32d9

baegjins/pomelo,leopoldfreeman/pomelo,tomdev2008/pomelo,youprofit/pomelo,onelei/pomelo,rain1017/pomelo,NetEase/pomelo,wangchuan3533/pomelo,LosingLin/pomelo,NetEase/pomelo,hzruandd/pomelo,Suninus/pomelo,lntitbk/pomelo,leopoldfreeman/pomelo,cosmosbox/pomelo,cosmosbox/pomelo,laiqiqi886/pomelo,MQQiang/pomelo,jokerCode/pomelo,cynron/pomelo,sumrac69/pomelo,tomdev2008/pomelo,rain1017/pomelo,LosingLin/pomelo,baongoccarrot/pomelo,IssicLzx/pomelo,samlin08/pomelo,skyblue/pomelo,cynron/pomelo,chianquan/pomelo,jqk6/pomelo,baongoccarrot/pomelo,hello2009chen/pomelo,NetEase/pomelo,wangchuan3533/pomelo,chenhaooo/pomelo,inetufo/pomelo_fix,hello2009chen/pomelo,fabiobc/pomelo,ljhsai/pomelo,cynron/pomelo,baegjins/pomelo,beni55/pomelo,bobcui/pomelo,silverera/pomelo_fix,Suninus/pomelo,oceanjack/pomelo,kkkkyue/pomelo,sumrac69/pomelo,jokerCode/pomelo,jokerCode/pomelo,WeBest/pomelo,blueseason/pomelo,ljhsai/pomelo,saruno/pomelo,onelei/pomelo,wangchuan3533/pomelo,youprofit/pomelo,Suninus/pomelo,WeBest/pomelo,fabiobc/pomelo,laiqiqi886/pomelo,baongoccarrot/pomelo,zxc122333/pomeco,jqk6/pomelo,baidao/pomelo,blueseason/pomelo,rain1017/pomelo,chianquan/pomelo,chenhaooo/pomelo,PortNumber53/pomelo,beni55/pomelo,zhukaixy/pomelo,kkkkyue/pomelo,hello2009chen/pomelo,MetSystem/pomelo,IssicLzx/pomelo,samlin08/pomelo,baidao/pomelo,compcj/pomelo,oceanjack/pomelo,zxc122333/pomelo,impcyber/pomelo,skyblue/pomelo,jqk6/pomelo,MetSystem/pomelo,zxc122333/pomeco,baidao/pomelo,kkkkyue/pomelo,chianquan/pomelo,sumrac69/pomelo,IssicLzx/pomelo,silverera/pomelo_fix,microlv/pomelo,fabiobc/pomelo,WeBest/pomelo,oceanjack/pomelo,MQQiang/pomelo,samlin08/pomelo,zxc122333/pomelo,hzruandd/pomelo,saruno/pomelo,ljhsai/pomelo,leopoldfreeman/pomelo,impcyber/pomelo,onelei/pomelo,compcj/pomelo,lntitbk/pomelo,lntitbk/pomelo,beni55/pomelo,baegjins/pomelo,zhukaixy/pomelo,PortNumber53/pomelo,saruno/pomelo,chenhaooo/pomelo,microlv/pomelo,tomdev2008/pomelo,bobcui/pomelo,microlv/pomelo,PortNumber53/pomelo,bobcui/pomelo,inetufo/pomelo_fix,silverera/pomelo_fix,LosingLin/pomelo,zhukaixy/pomelo,zxc122333/pomelo,youprofit/pomelo,blueseason/pomelo,hzruandd/pomelo,compcj/pomelo,skyblue/pomelo,MQQiang/pomelo,inetufo/pomelo_fix,MetSystem/pomelo,laiqiqi886/pomelo,cosmosbox/pomelo