ssh: Fix crash of controller
ssh: Fix crash of controller

if the supervisor it tries to kill is already dead.

erlang/otp,dgud/otp,dumbbell/otp,isvilen/otp,isvilen/otp,potatosalad/otp,vinoski/otp,getong/otp,rlipscombe/otp,uabboli/otp,bjorng/otp,lrascao/otp,g-andrade/otp,vinoski/otp,vinoski/otp,uabboli/otp,jj1bdx/otp,emacsmirror/erlang,jj1bdx/otp,dumbbell/otp,dgud/otp,vinoski/otp,ferd/otp,mikpe/otp,uabboli/otp,lrascao/otp,emacsmirror/erlang,mikpe/otp,dumbbell/otp,lrascao/otp,g-andrade/otp,g-andrade/otp,dgud/otp,bjorng/otp,emacsmirror/erlang,erlang/otp,rlipscombe/otp,dgud/otp,isvilen/otp,vinoski/otp,erlang/otp,bjorng/otp,isvilen/otp,jj1bdx/otp,bjorng/otp,isvilen/otp,ferd/otp,getong/otp,rlipscombe/otp,dumbbell/otp,bjorng/otp,uabboli/otp,potatosalad/otp,erlang/otp,potatosalad/otp,vinoski/otp,emacsmirror/erlang,bjorng/otp,emacsmirror/erlang,ferd/otp,jj1bdx/otp,potatosalad/otp,ferd/otp,vinoski/otp,dgud/otp,getong/otp,getong/otp,isvilen/otp,jj1bdx/otp,isvilen/otp,lrascao/otp,getong/otp,dgud/otp,dgud/otp,jj1bdx/otp,rlipscombe/otp,uabboli/otp,lrascao/otp,getong/otp,bjorng/otp,mikpe/otp,erlang/otp,potatosalad/otp,isvilen/otp,rlipscombe/otp,jj1bdx/otp,rlipscombe/otp,ferd/otp,emacsmirror/erlang,getong/otp,jj1bdx/otp,mikpe/otp,dumbbell/otp,dumbbell/otp,ferd/otp,g-andrade/otp,rlipscombe/otp,potatosalad/otp,uabboli/otp,g-andrade/otp,bjorng/otp,ferd/otp,potatosalad/otp,mikpe/otp,mikpe/otp,jj1bdx/otp,mikpe/otp,emacsmirror/erlang,lrascao/otp,dumbbell/otp,g-andrade/otp,uabboli/otp,ferd/otp,uabboli/otp,getong/otp,mikpe/otp,dumbbell/otp,getong/otp,mikpe/otp,mikpe/otp,vinoski/otp,erlang/otp,isvilen/otp,rlipscombe/otp,jj1bdx/otp,isvilen/otp,bjorng/otp,lrascao/otp,dgud/otp,erlang/otp,g-andrade/otp,ferd/otp,uabboli/otp,dgud/otp,getong/otp,erlang/otp,g-andrade/otp,vinoski/otp,g-andrade/otp,emacsmirror/erlang,vinoski/otp,potatosalad/otp,dumbbell/otp,g-andrade/otp,rlipscombe/otp,potatosalad/otp,emacsmirror/erlang,erlang/otp,lrascao/otp,lrascao/otp,bjorng/otp,rlipscombe/otp,erlang/otp,potatosalad/otp,dgud/otp,emacsmirror/erlang,dumbbell/otp