Return empty array from getPanes when PaneContainer is destroyed
Return empty array from getPanes when PaneContainer is destroyed

Signed-off-by: Max Brunsfeld <78036c9b69b887700d5846f26a788d53b201ffbb@github.com>

PKRoma/atom,sotayamashita/atom,AdrianVovk/substance-ide,decaffeinate-examples/atom,CraZySacX/atom,decaffeinate-examples/atom,stinsonga/atom,atom/atom,AdrianVovk/substance-ide,kevinrenaers/atom,Arcanemagus/atom,ardeshirj/atom,FIT-CSE2410-A-Bombs/atom,me-benni/atom,FIT-CSE2410-A-Bombs/atom,PKRoma/atom,andrewleverette/atom,Ingramz/atom,tjkr/atom,decaffeinate-examples/atom,xream/atom,atom/atom,Mokolea/atom,stinsonga/atom,AlexxNica/atom,sotayamashita/atom,liuderchi/atom,FIT-CSE2410-A-Bombs/atom,t9md/atom,brettle/atom,me-benni/atom,Ingramz/atom,Arcanemagus/atom,ardeshirj/atom,AlexxNica/atom,bolinfest/atom,tjkr/atom,kevinrenaers/atom,rlugojr/atom,xream/atom,sotayamashita/atom,Mokolea/atom,bsmr-x-script/atom,brettle/atom,Ingramz/atom,atom/atom,andrewleverette/atom,stinsonga/atom,kevinrenaers/atom,bsmr-x-script/atom,bsmr-x-script/atom,CraZySacX/atom,bolinfest/atom,me-benni/atom,bolinfest/atom,liuderchi/atom,CraZySacX/atom,t9md/atom,decaffeinate-examples/atom,Mokolea/atom,xream/atom,tjkr/atom,PKRoma/atom,Arcanemagus/atom,rlugojr/atom,AlexxNica/atom,stinsonga/atom,rlugojr/atom,AdrianVovk/substance-ide,andrewleverette/atom,brettle/atom,liuderchi/atom,t9md/atom,liuderchi/atom,ardeshirj/atom