erts: Fix NIL to be correct size
erts: Fix NIL to be correct size

When used as an argument to a variadic function NIL has to
have the correct size otherwise it is assumed to be an int
which is not what the va_list function expects.

This was broken in: 8b8c7a63030360436f2ee6d6390d120199260823

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