Fix a build error related with NPN version and JDK8
Fix a build error related with NPN version and JDK8

netty/netty,ichaki5748/netty,DavidAlphaFox/netty,NiteshKant/netty,blucas/netty,mx657649013/netty,ichaki5748/netty,doom369/netty,imangry/netty-zh,ejona86/netty,johnou/netty,gerdriesselmann/netty,fenik17/netty,louxiu/netty,windie/netty,Scottmitch/netty,s-gheldd/netty,Techcable/netty,SinaTadayon/netty,ichaki5748/netty,yrcourage/netty,Spikhalskiy/netty,Scottmitch/netty,carl-mastrangelo/netty,yipen9/netty,Scottmitch/netty,yipen9/netty,Apache9/netty,Apache9/netty,mx657649013/netty,mx657649013/netty,purplefox/netty-4.0.2.8-hacked,Squarespace/netty,s-gheldd/netty,SinaTadayon/netty,NiteshKant/netty,netty/netty,cnoldtree/netty,mcobrien/netty,louxiu/netty,blucas/netty,gerdriesselmann/netty,kiril-me/netty,netty/netty,carl-mastrangelo/netty,skyao/netty,cnoldtree/netty,luyiisme/netty,DavidAlphaFox/netty,carl-mastrangelo/netty,ngocdaothanh/netty,windie/netty,chanakaudaya/netty,bryce-anderson/netty,joansmith/netty,maliqq/netty,s-gheldd/netty,Squarespace/netty,golovnin/netty,skyao/netty,luyiisme/netty,maliqq/netty,johnou/netty,mcobrien/netty,jchambers/netty,cnoldtree/netty,DavidAlphaFox/netty,bryce-anderson/netty,artgon/netty,carl-mastrangelo/netty,s-gheldd/netty,fengjiachun/netty,cnoldtree/netty,johnou/netty,jongyeol/netty,Apache9/netty,yrcourage/netty,Scottmitch/netty,artgon/netty,skyao/netty,fengjiachun/netty,purplefox/netty-4.0.2.8-hacked,SinaTadayon/netty,andsel/netty,zer0se7en/netty,johnou/netty,SinaTadayon/netty,chanakaudaya/netty,zer0se7en/netty,andsel/netty,luyiisme/netty,johnou/netty,bryce-anderson/netty,carl-mastrangelo/netty,maliqq/netty,gerdriesselmann/netty,jchambers/netty,louxiu/netty,s-gheldd/netty,kiril-me/netty,artgon/netty,purplefox/netty-4.0.2.8-hacked,joansmith/netty,blucas/netty,Squarespace/netty,tbrooks8/netty,yipen9/netty,Spikhalskiy/netty,golovnin/netty,ichaki5748/netty,zer0se7en/netty,mcobrien/netty,imangry/netty-zh,tbrooks8/netty,ngocdaothanh/netty,ejona86/netty,NiteshKant/netty,idelpivnitskiy/netty,NiteshKant/netty,KatsuraKKKK/netty,bryce-anderson/netty,joansmith/netty,idelpivnitskiy/netty,jongyeol/netty,ejona86/netty,KatsuraKKKK/netty,tbrooks8/netty,doom369/netty,mcobrien/netty,KatsuraKKKK/netty,mx657649013/netty,imangry/netty-zh,imangry/netty-zh,fengjiachun/netty,windie/netty,andsel/netty,Squarespace/netty,windie/netty,cnoldtree/netty,andsel/netty,doom369/netty,mikkokar/netty,yipen9/netty,yrcourage/netty,mikkokar/netty,jchambers/netty,Spikhalskiy/netty,ejona86/netty,joansmith/netty,maliqq/netty,artgon/netty,luyiisme/netty,Techcable/netty,zer0se7en/netty,Spikhalskiy/netty,andsel/netty,chanakaudaya/netty,mx657649013/netty,kiril-me/netty,chanakaudaya/netty,mcobrien/netty,ngocdaothanh/netty,bryce-anderson/netty,zer0se7en/netty,idelpivnitskiy/netty,louxiu/netty,golovnin/netty,netty/netty,luyiisme/netty,fengjiachun/netty,gerdriesselmann/netty,Apache9/netty,purplefox/netty-4.0.2.8-hacked,gerdriesselmann/netty,Spikhalskiy/netty,fenik17/netty,skyao/netty,ichaki5748/netty,fenik17/netty,idelpivnitskiy/netty,tbrooks8/netty,Techcable/netty,Techcable/netty,skyao/netty,KatsuraKKKK/netty,idelpivnitskiy/netty,louxiu/netty,SinaTadayon/netty,Scottmitch/netty,NiteshKant/netty,ejona86/netty,Techcable/netty,yrcourage/netty,golovnin/netty,blucas/netty,doom369/netty,fenik17/netty,ngocdaothanh/netty,maliqq/netty,doom369/netty,blucas/netty,windie/netty,jongyeol/netty,kiril-me/netty,mikkokar/netty,artgon/netty,jchambers/netty,jchambers/netty,joansmith/netty,DavidAlphaFox/netty,kiril-me/netty,golovnin/netty,netty/netty,jongyeol/netty,tbrooks8/netty,mikkokar/netty,Apache9/netty,ngocdaothanh/netty,fenik17/netty,Squarespace/netty,yrcourage/netty,imangry/netty-zh,jongyeol/netty,KatsuraKKKK/netty,mikkokar/netty,fengjiachun/netty,chanakaudaya/netty