Code cleanup to remove confusing assertion
Code cleanup to remove confusing assertion

The code of add_ref/6 contained an assertion that somehow appeared
twice.  Also, a recent commit (2b2de61) suppressed an unmatched
return warning in a non-optimal way.  By changing the return type
of hipe_bifs:add_ref/2 to be 'ok' instead of [] the code can be
cleaned up and simplified.

While at it, fixed the wrong indentation of some nearby code.

falkevik/otp,massemanet/otp,kvakvs/otp,lrascao/otp,RoadRunnr/otp,bernardd/otp,tuncer/otp,bjorng/otp,lrascao/otp,electricimp/otp,isvilen/otp,getong/otp,jj1bdx/otp,cobusc/otp,matwey/otp,lrascao/otp,fenollp/otp,lrascao/otp,aboroska/otp,kvakvs/otp,emacsmirror/erlang,cobusc/otp,erlang/otp,RaimoNiskanen/otp,bsmr-erlang/otp,RaimoNiskanen/otp,lrascao/otp,matwey/otp,RaimoNiskanen/otp,lrascao/otp,matwey/otp,getong/otp,dgud/otp,lrascao/otp,tuncer/otp,dumbbell/otp,vinoski/otp,goertzenator/otp,erlang/otp,dgud/otp,jj1bdx/otp,tuncer/otp,RoadRunnr/otp,emacsmirror/erlang,potatosalad/otp,saleyn/otp,bernardd/otp,mikpe/otp,uabboli/otp,erlang/otp,erlang/otp,g-andrade/otp,RoadRunnr/otp,dumbbell/otp,RoadRunnr/otp,electricimp/otp,ferd/otp,uabboli/otp,fenollp/otp,bjorng/otp,bernardd/otp,dumbbell/otp,dumbbell/otp,falkevik/otp,aboroska/otp,tuncer/otp,vladdu/otp,saleyn/otp,potatosalad/otp,dgud/otp,vladdu/otp,bsmr-erlang/otp,vinoski/otp,aboroska/otp,saleyn/otp,falkevik/otp,emacsmirror/erlang,dgud/otp,rlipscombe/otp,electricimp/otp,fenollp/otp,aboroska/otp,jj1bdx/otp,emacsmirror/erlang,release-project/otp,erlang/otp,aboroska/otp,vinoski/otp,saleyn/otp,mikpe/otp,vinoski/otp,goertzenator/otp,rlipscombe/otp,isvilen/otp,vinoski/otp,kvakvs/otp,erlang/otp,electricimp/otp,mikpe/otp,uabboli/otp,fenollp/otp,electricimp/otp,electricimp/otp,cobusc/otp,ferd/otp,tuncer/otp,cobusc/otp,jj1bdx/otp,kvakvs/otp,uabboli/otp,goertzenator/otp,legoscia/otp,bernardd/otp,dgud/otp,mikpe/otp,dumbbell/otp,matwey/otp,jj1bdx/otp,bjorng/otp,dgud/otp,uabboli/otp,legoscia/otp,dumbbell/otp,g-andrade/otp,rlipscombe/otp,release-project/otp,bjorng/otp,ferd/otp,mikpe/otp,isvilen/otp,legoscia/otp,vladdu/otp,RoadRunnr/otp,getong/otp,goertzenator/otp,electricimp/otp,saleyn/otp,kvakvs/otp,rlipscombe/otp,getong/otp,erlang/otp,legoscia/otp,uabboli/otp,isvilen/otp,RoadRunnr/otp,tuncer/otp,g-andrade/otp,falkevik/otp,bjorng/otp,tuncer/otp,bernardd/otp,bjorng/otp,bsmr-erlang/otp,g-andrade/otp,jj1bdx/otp,legoscia/otp,goertzenator/otp,bjorng/otp,release-project/otp,rlipscombe/otp,massemanet/otp,bsmr-erlang/otp,falkevik/otp,lrascao/otp,getong/otp,erlang/otp,dgud/otp,massemanet/otp,mikpe/otp,getong/otp,vladdu/otp,cobusc/otp,bjorng/otp,g-andrade/otp,dgud/otp,bsmr-erlang/otp,bernardd/otp,vinoski/otp,bernardd/otp,dumbbell/otp,massemanet/otp,isvilen/otp,release-project/otp,g-andrade/otp,RaimoNiskanen/otp,aboroska/otp,potatosalad/otp,erlang/otp,getong/otp,emacsmirror/erlang,legoscia/otp,bsmr-erlang/otp,emacsmirror/erlang,dgud/otp,vinoski/otp,g-andrade/otp,massemanet/otp,getong/otp,aboroska/otp,matwey/otp,bernardd/otp,fenollp/otp,rlipscombe/otp,kvakvs/otp,kvakvs/otp,release-project/otp,tuncer/otp,RaimoNiskanen/otp,vladdu/otp,matwey/otp,cobusc/otp,potatosalad/otp,emacsmirror/erlang,vinoski/otp,uabboli/otp,release-project/otp,ferd/otp,bsmr-erlang/otp,mikpe/otp,vinoski/otp,matwey/otp,g-andrade/otp,getong/otp,saleyn/otp,mikpe/otp,massemanet/otp,erlang/otp,aboroska/otp,matwey/otp,RaimoNiskanen/otp,falkevik/otp,vladdu/otp,potatosalad/otp,potatosalad/otp,vinoski/otp,fenollp/otp,fenollp/otp,falkevik/otp,saleyn/otp,isvilen/otp,rlipscombe/otp,goertzenator/otp,potatosalad/otp,massemanet/otp,isvilen/otp,isvilen/otp,release-project/otp,legoscia/otp,rlipscombe/otp,massemanet/otp,bsmr-erlang/otp,matwey/otp,legoscia/otp,release-project/otp,rlipscombe/otp,jj1bdx/otp,release-project/otp,emacsmirror/erlang,emacsmirror/erlang,RoadRunnr/otp,RaimoNiskanen/otp,emacsmirror/erlang,isvilen/otp,ferd/otp,jj1bdx/otp,cobusc/otp,RaimoNiskanen/otp,aboroska/otp,massemanet/otp,mikpe/otp,dumbbell/otp,bjorng/otp,potatosalad/otp,mikpe/otp,ferd/otp,g-andrade/otp,dumbbell/otp,goertzenator/otp,kvakvs/otp,g-andrade/otp,saleyn/otp,legoscia/otp,dumbbell/otp,ferd/otp,jj1bdx/otp,bjorng/otp,potatosalad/otp,goertzenator/otp,getong/otp,potatosalad/otp,rlipscombe/otp,RoadRunnr/otp,electricimp/otp,uabboli/otp,fenollp/otp,kvakvs/otp,ferd/otp,isvilen/otp,dgud/otp,vladdu/otp,falkevik/otp,RaimoNiskanen/otp,RoadRunnr/otp,uabboli/otp,electricimp/otp,ferd/otp,tuncer/otp,lrascao/otp,falkevik/otp,cobusc/otp,goertzenator/otp,jj1bdx/otp,vladdu/otp,fenollp/otp,vladdu/otp,bsmr-erlang/otp,bernardd/otp,saleyn/otp