[socket-nif] Sending when buffer is full failed
[socket-nif] Sending when buffer is full failed

When the send buffer was full (eagain), the send failed
(with the rather useless return of {ok, -1}) instead of
returning {error, eagain}.

OTP-14831

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