Ignore CollectReport messages when shutting down the LayoutTask.
Ignore CollectReport messages when shutting down the LayoutTask.

Prior to this change, a panic would occur if a CollectReport message was
received while the LayoutTask was shutting down. Now it just gets
ignored.

g-k/servo,emilio/servo,RenaudParis/servo,DominoTree/servo,ryancanhelpyou/servo,notriddle/servo,vks/servo,bjwbell/servo,aidanhs/servo,akosel/servo,dsandeephegde/servo,mattnenterprise/servo,peterjoel/servo,ConnorGBrewster/servo,sadmansk/servo,akosel/servo,emilio/servo,g-k/servo,WriterOfAlicrow/servo,upsuper/servo,s142857/servo,codemac/servo,SimonSapin/servo,runarberg/servo,mbrubeck/servo,thiagopnts/servo,wartman4404/servo,eddyb/servo,upsuper/servo,walac/servo,brendandahl/servo,aidanhs/servo,rnestler/servo,jdramani/servo,mdibaiee/servo,s142857/servo,mattnenterprise/servo,anthgur/servo,walac/servo,jimberlage/servo,nnethercote/servo,nnethercote/servo,tafia/servo,vks/servo,canaltinova/servo,larsbergstrom/servo,runarberg/servo,eddyb/servo,mbrubeck/servo,huonw/servo,jgraham/servo,caldwell/servo,codemac/servo,CJ8664/servo,splav/servo,tschneidereit/servo,notriddle/servo,szeged/servo,tafia/servo,pyecs/servo,peterjoel/servo,jdramani/servo,notriddle/servo,samfoo/servo,WriterOfAlicrow/servo,splav/servo,dagnir/servo,upsuper/servo,pgonda/servo,A-deLuna/servo,thiagopnts/servo,meh/servo,mattnenterprise/servo,hyowon/servo,youprofit/servo,thiagopnts/servo,splav/servo,tafia/servo,dati91/servo,zentner-kyle/servo,g-k/servo,peterjoel/servo,tempbottle/servo,tschneidereit/servo,s142857/servo,upsuper/servo,mbrubeck/servo,AnthonyBroadCrawford/servo,rentongzhang/servo,CJ8664/servo,dagnir/servo,meh/servo,pyecs/servo,notriddle/servo,paulrouget/servo,walac/servo,wartman4404/servo,canaltinova/servo,rnestler/servo,AnthonyBroadCrawford/servo,nick-thompson/servo,dsandeephegde/servo,jdramani/servo,szeged/servo,tempbottle/servo,bjwbell/servo,samfoo/servo,saneyuki/servo,splav/servo,saratang/servo,splav/servo,peterjoel/servo,zentner-kyle/servo,szeged/servo,nerith/servo,sadmansk/servo,tafia/servo,saratang/servo,WriterOfAlicrow/servo,mbrubeck/servo,larsbergstrom/servo,rnestler/servo,samfoo/servo,aweinstock314/servo,pyfisch/servo,szeged/servo,samfoo/servo,jlegendary/servo,peterjoel/servo,jgraham/servo,aweinstock314/servo,paulrouget/servo,dati91/servo,boghison/servo,meh/servo,ryancanhelpyou/servo,canaltinova/servo,avadacatavra/servo,tschneidereit/servo,pyfisch/servo,wartman4404/servo,deokjinkim/servo,anthgur/servo,huonw/servo,AnthonyBroadCrawford/servo,dati91/servo,notriddle/servo,mdibaiee/servo,nrc/servo,KiChjang/servo,akosel/servo,sadmansk/servo,zentner-kyle/servo,paulrouget/servo,youprofit/servo,jgraham/servo,mt2d2/servo,nnethercote/servo,akosel/servo,jimberlage/servo,RenaudParis/servo,canaltinova/servo,eddyb/servo,dhananjay92/servo,nrc/servo,paulrouget/servo,mattnenterprise/servo,g-k/servo,aidanhs/servo,mattnenterprise/servo,thiagopnts/servo,hyowon/servo,rnestler/servo,paulrouget/servo,dhananjay92/servo,hyowon/servo,kindersung/servo,steveklabnik/servo,RenaudParis/servo,nick-thompson/servo,huonw/servo,nick-thompson/servo,nerith/servo,sadmansk/servo,tempbottle/servo,dsandeephegde/servo,A-deLuna/servo,jgraham/servo,jgraham/servo,cbrewster/servo,karlito40/servo,g-k/servo,samfoo/servo,anthgur/servo,SimonSapin/servo,sadmansk/servo,jgraham/servo,nnethercote/servo,pyecs/servo,GyrosOfWar/servo,boghison/servo,SimonSapin/servo,tafia/servo,saneyuki/servo,peterjoel/servo,peterjoel/servo,paulrouget/servo,hyowon/servo,nnethercote/servo,steveklabnik/servo,karlito40/servo,sadmansk/servo,vks/servo,fiji-flo/servo,dhananjay92/servo,szeged/servo,j3parker/servo,s142857/servo,j3parker/servo,codemac/servo,tschneidereit/servo,rentongzhang/servo,DominoTree/servo,runarberg/servo,avadacatavra/servo,fiji-flo/servo,brendandahl/servo,DominoTree/servo,akosel/servo,rnestler/servo,zentner-kyle/servo,nnethercote/servo,emilio/servo,youprofit/servo,notriddle/servo,tafia/servo,dvberkel/servo,pyecs/servo,A-deLuna/servo,kindersung/servo,DominoTree/servo,KiChjang/servo,fiji-flo/servo,boghison/servo,youprofit/servo,A-deLuna/servo,codemac/servo,ryancanhelpyou/servo,cbrewster/servo,dsandeephegde/servo,caldwell/servo,cbrewster/servo,dsandeephegde/servo,emilio/servo,SimonSapin/servo,brendandahl/servo,wartman4404/servo,dati91/servo,saneyuki/servo,emilio/servo,jdramani/servo,CJ8664/servo,steveklabnik/servo,larsbergstrom/servo,larsbergstrom/servo,nrc/servo,A-deLuna/servo,kindersung/servo,g-k/servo,zentner-kyle/servo,fiji-flo/servo,runarberg/servo,KiChjang/servo,bjwbell/servo,saneyuki/servo,dsandeephegde/servo,runarberg/servo,RenaudParis/servo,aidanhs/servo,aweinstock314/servo,upsuper/servo,mdibaiee/servo,nrc/servo,mdibaiee/servo,ConnorGBrewster/servo,saratang/servo,GyrosOfWar/servo,codemac/servo,larsbergstrom/servo,dagnir/servo,dhananjay92/servo,DominoTree/servo,jimberlage/servo,upsuper/servo,s142857/servo,zentner-kyle/servo,mt2d2/servo,deokjinkim/servo,mattnenterprise/servo,youprofit/servo,runarberg/servo,jlegendary/servo,GyrosOfWar/servo,rentongzhang/servo,dvberkel/servo,pyecs/servo,AnthonyBroadCrawford/servo,emilio/servo,vks/servo,hyowon/servo,karlito40/servo,bjwbell/servo,akosel/servo,splav/servo,splav/servo,avadacatavra/servo,pyfisch/servo,GyrosOfWar/servo,brendandahl/servo,canaltinova/servo,huonw/servo,thiagopnts/servo,larsbergstrom/servo,CJ8664/servo,mdibaiee/servo,pyecs/servo,walac/servo,emilio/servo,steveklabnik/servo,jimberlage/servo,mbrubeck/servo,nnethercote/servo,avadacatavra/servo,steveklabnik/servo,saneyuki/servo,avadacatavra/servo,pyfisch/servo,pgonda/servo,dhananjay92/servo,karlito40/servo,dvberkel/servo,KiChjang/servo,pgonda/servo,KiChjang/servo,saneyuki/servo,nerith/servo,brendandahl/servo,upsuper/servo,caldwell/servo,nerith/servo,dagnir/servo,tempbottle/servo,g-k/servo,CJ8664/servo,nick-thompson/servo,akosel/servo,runarberg/servo,walac/servo,saratang/servo,s142857/servo,kindersung/servo,ConnorGBrewster/servo,dvberkel/servo,fiji-flo/servo,fiji-flo/servo,eddyb/servo,caldwell/servo,nick-thompson/servo,ConnorGBrewster/servo,avadacatavra/servo,j3parker/servo,mdibaiee/servo,thiagopnts/servo,bjwbell/servo,notriddle/servo,larsbergstrom/servo,mt2d2/servo,jimberlage/servo,CJ8664/servo,karlito40/servo,sadmansk/servo,emilio/servo,notriddle/servo,larsbergstrom/servo,hyowon/servo,youprofit/servo,nnethercote/servo,SimonSapin/servo,peterjoel/servo,mattnenterprise/servo,nerith/servo,SimonSapin/servo,dvberkel/servo,caldwell/servo,paulrouget/servo,wartman4404/servo,nrc/servo,notriddle/servo,codemac/servo,ryancanhelpyou/servo,emilio/servo,pyfisch/servo,pgonda/servo,wartman4404/servo,thiagopnts/servo,karlito40/servo,deokjinkim/servo,fiji-flo/servo,RenaudParis/servo,tschneidereit/servo,dati91/servo,meh/servo,nrc/servo,CJ8664/servo,caldwell/servo,RenaudParis/servo,dagnir/servo,ryancanhelpyou/servo,meh/servo,DominoTree/servo,thiagopnts/servo,upsuper/servo,pyfisch/servo,jimberlage/servo,cbrewster/servo,aweinstock314/servo,mbrubeck/servo,saneyuki/servo,szeged/servo,s142857/servo,DominoTree/servo,huonw/servo,dati91/servo,SimonSapin/servo,j3parker/servo,kindersung/servo,AnthonyBroadCrawford/servo,eddyb/servo,notriddle/servo,jdramani/servo,nerith/servo,tafia/servo,cbrewster/servo,ConnorGBrewster/servo,GyrosOfWar/servo,WriterOfAlicrow/servo,rentongzhang/servo,pgonda/servo,dsandeephegde/servo,pgonda/servo,j3parker/servo,ryancanhelpyou/servo,ConnorGBrewster/servo,jdramani/servo,j3parker/servo,dati91/servo,A-deLuna/servo,boghison/servo,splav/servo,paulrouget/servo,eddyb/servo,CJ8664/servo,samfoo/servo,paulrouget/servo,pyfisch/servo,vks/servo,jlegendary/servo,aweinstock314/servo,mdibaiee/servo,saneyuki/servo,rnestler/servo,wartman4404/servo,dvberkel/servo,GyrosOfWar/servo,kindersung/servo,emilio/servo,jimberlage/servo,canaltinova/servo,ConnorGBrewster/servo,codemac/servo,eddyb/servo,jdramani/servo,anthgur/servo,vks/servo,huonw/servo,WriterOfAlicrow/servo,aweinstock314/servo,boghison/servo,eddyb/servo,fiji-flo/servo,dati91/servo,deokjinkim/servo,hyowon/servo,DominoTree/servo,anthgur/servo,RenaudParis/servo,cbrewster/servo,WriterOfAlicrow/servo,aidanhs/servo,boghison/servo,rnestler/servo,ConnorGBrewster/servo,pyfisch/servo,nnethercote/servo,bjwbell/servo,walac/servo,KiChjang/servo,splav/servo,saneyuki/servo,dhananjay92/servo,szeged/servo,paulrouget/servo,saneyuki/servo,tschneidereit/servo,dagnir/servo,cbrewster/servo,anthgur/servo,meh/servo,jlegendary/servo,GyrosOfWar/servo,nrc/servo,walac/servo,caldwell/servo,mt2d2/servo,dsandeephegde/servo,kindersung/servo,nick-thompson/servo,rentongzhang/servo,vks/servo,pyecs/servo,saratang/servo,jimberlage/servo,mbrubeck/servo,szeged/servo,deokjinkim/servo,tempbottle/servo,canaltinova/servo,jlegendary/servo,dvberkel/servo,mattnenterprise/servo,steveklabnik/servo,mt2d2/servo,AnthonyBroadCrawford/servo,AnthonyBroadCrawford/servo,steveklabnik/servo,anthgur/servo,nerith/servo,zentner-kyle/servo,samfoo/servo,dhananjay92/servo,KiChjang/servo,avadacatavra/servo,KiChjang/servo,karlito40/servo,rnestler/servo,szeged/servo,jlegendary/servo,j3parker/servo,pyfisch/servo,saratang/servo,aidanhs/servo,mbrubeck/servo,larsbergstrom/servo,DominoTree/servo,sadmansk/servo,jlegendary/servo,brendandahl/servo,canaltinova/servo,peterjoel/servo,anthgur/servo,tempbottle/servo,bjwbell/servo,mt2d2/servo,dagnir/servo,KiChjang/servo,SimonSapin/servo,huonw/servo,meh/servo,avadacatavra/servo,nnethercote/servo,WriterOfAlicrow/servo,brendandahl/servo,A-deLuna/servo,jimberlage/servo,splav/servo,boghison/servo,larsbergstrom/servo,rentongzhang/servo,DominoTree/servo,saratang/servo,pyfisch/servo,KiChjang/servo,deokjinkim/servo,aidanhs/servo,szeged/servo,tempbottle/servo,aweinstock314/servo,rentongzhang/servo,pgonda/servo,peterjoel/servo,tschneidereit/servo,jgraham/servo,mt2d2/servo,ryancanhelpyou/servo,nick-thompson/servo,youprofit/servo,deokjinkim/servo,cbrewster/servo