fix root mount with emptyNode
fix root mount with emptyNode

hanhongyuan/vue,leemotive/vue,Ddder-FE/vue,hanhongyuan/vue,posva/vue,gebilaoxiong/vue,posva/vue,Ddder-FE/vue,leemotive/vue,Kingwl/vue,xueyaodeai/vue,KingMario/vue,greennyreborn/vue,Kingwl/vue,KingMario/vue,greennyreborn/vue,pramudaprakash/GITHUB,Jinjiang/vue,gebilaoxiong/vue,pramudaprakash/GITHUB,Kingwl/vue,pramudaprakash/GITHUB,greennyreborn/vue,lizhiyao/vue,leemotive/vue,sreesirisha/GITMidtermexam,leemotive/vue,Ddder-FE/vue,sreesirisha/GITMidtermexam,cnchanning/vue,vuejs/vue,vuejs/vue,Hanks10100/vue,vuejs/vue,vuejs/vue,KingMario/vue,sreesirisha/GITMidtermexam,wushuyi/vue,gebilaoxiong/vue,cnchanning/vue,Kingwl/vue,xueyaodeai/vue,lizhiyao/vue,Hanks10100/vue,KingMario/vue,wushuyi/vue,Hanks10100/vue,lizhiyao/vue,posva/vue,Jinjiang/vue,xueyaodeai/vue,Jinjiang/vue,Hanks10100/vue,optimizely/vue,xueyaodeai/vue,hanhongyuan/vue,lizhiyao/vue,Jinjiang/vue,pramudaprakash/GITHUB,greennyreborn/vue,posva/vue,Ddder-FE/vue,sreesirisha/GITMidtermexam,hanhongyuan/vue,cnchanning/vue