[observer] Don't crash on Log > Toggle Log View
[observer] Don't crash on Log > Toggle Log View

Since Logger was introduced in OTP-21.0, menu choice Log > Toggle Log
View in observer would cause a crash unless an error_logger event
handler was explicitly installed. This is now corrected.

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