ssh: Fix potential crash if failure in init of client
ssh: Fix potential crash if failure in init of client

If ssh_connection_handler:init/1 failed (= returned {stop,Error})
there where no supervisors defined. That caused a Crash report
instead of a sensible logging and normal error return.

Servers are not affected of this.

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