gzio.c: Remove unnecessary usage of the OF() macro
gzio.c: Remove unnecessary usage of the OF() macro

Daniel Goertzen reported that commit 8a147a7365 broke building
of Erlang/OTP on Gentoo Linux because the macro OF() was missing.
Apparently, on Gentoo the OF() macro in zconf.h has been renamed
to _Z_OF() (to avoid polluting the global namespace).

Don't use the OF() macro in gzio.c since it no longer serves any
useful purpose (it provided compatibility with pre-ANSI/ISO C
compilers, but the rest of Erlang/OTP requires an ANSI/ISO C
compiler anyway).

lrascao/otp,RoadRunnr/otp,goertzenator/otp,schlagert/otp,jamesruan/otp,marquisthunder/otp,sammoth-wazoku/otp,gjaldon/otp,yangchengjian/otp,platinumthinker/otp,jemsbhai/otp,falkevik/otp,getong/otp,theom/otp,dumbbell/otp,g-andrade/otp,potatosalad/otp,platinumthinker/otp,jemsbhai/otp,emacsmirror/erlang,bsmr-erlang/otp,jamesruan/otp,cnbin/otp,klarna/otp,awetzel/otp,release-project/otp,beni55/otp,marquisthunder/otp,getong/otp,bsmr-erlang/otp,neeraj9/otp,electricimp/otp,dgud/otp,Teino1978-Corp/otp,jemsbhai/otp,riverrun/otp,erlang/otp,entropiae/otp,vinoski/otp,VincentHHL/otp,legoscia/otp,bjorng/otp,Teino1978-Corp/erlang-otp,palas/otp,Teino1978-Corp/otp,RichMorin/otp,potatosalad/otp,awetzel/otp,jinshana/otp,krishnakumar4a4/otp,goertzenator/otp,kvakvs/otp,fenollp/otp,ahmedshafeeq/otp,yangchengjian/otp,goertzenator/otp,legoscia/otp,dgud/otp,fenollp/otp,getong/otp,basho/otp,dumbbell/otp,weisslj/otp,mikpe/otp,basho/otp,weisslj/otp,tuncer/otp,matwey/otp,riverrun/otp,matwey/otp,dumbbell/otp,ahmedshafeeq/otp,massemanet/otp,saleyn/otp,gjaldon/otp,weisslj/otp,krishnakumar4a4/otp,RichMorin/otp,potatosalad/otp,RaimoNiskanen/otp,electricimp/otp,jamesruan/otp,stolen/otp,falkevik/otp,RaimoNiskanen/otp,emile/otp,electricimp/otp,paulcager/otp,isvilen/otp,sdebnath/otp,bjorng/otp,legoscia/otp,kvakvs/otp,release-project/otp,cobusc/otp,enikki/otp,Teino1978-Corp/otp,RGafiyatullin/otp,GinjaNinja32/otp,klarna/otp,mujiatong/otp,ferd/otp,vic/otp,legoscia/otp,sitexa/otp,potatosalad/otp,Teino1978-Corp/otp,vic/otp,paulcager/otp,Teino1978-Corp/erlang-otp,jinshana/otp,bugs-erlang-org/otp,emacsmirror/erlang,vladdu/otp,dumbbell/otp,bugs-erlang-org/otp,ahmedshafeeq/otp,emacsmirror/erlang,lantti/otp,platinumthinker/otp,klarna/otp,paulcager/otp,mikpe/otp,matwey/otp,theom/otp,jamesruan/otp,RaimoNiskanen/otp,lianghaivv/otp,jj1bdx/otp,beni55/otp,derek121/otp,lrascao/otp,RoadRunnr/otp,sammoth-wazoku/otp,lrascao/otp,Teino1978-Corp/erlang-otp,RGafiyatullin/otp,uabboli/otp,emile/otp,cnbin/otp,haguenau/otp,palas/otp,lhslll/otp,sdebnath/otp,lightcyphers/otp,jamesruan/otp,bsmr-erlang/otp,vinoski/otp,ferd/otp,rlipscombe/otp,kvakvs/otp,schlagert/otp,falkevik/otp,lianghaivv/otp,uabboli/otp,johanclaesson/otp,Teino1978-Corp/erlang-otp,benoitc/otp-1,bugs-erlang-org/otp,enikki/otp,saleyn/otp,isvilen/otp,cobusc/otp,erlang/otp,lightcyphers/otp,gjaldon/otp,ferd/otp,lantti/otp,ader1990/otp,aboroska/otp,matwey/otp,emacsmirror/erlang,sitexa/otp,legoscia/otp,palas/otp,ader1990/otp,riverrun/otp,emacsmirror/erlang,potatosalad/otp,aboroska/otp,sammoth-wazoku/otp,dgud/otp,cobusc/otp,lantti/otp,neeraj9/otp,yangchengjian/otp,cobusc/otp,sitexa/otp,erlang/otp,potatosalad/otp,bernardd/otp,cobusc/otp,fenollp/otp,potatosalad/otp,jamesruan/otp,matwey/otp,ader1990/otp,krishnakumar4a4/otp,dgud/otp,psyeugenic/otp,emacsmirror/erlang,neeraj9/otp,theom/otp,yangchengjian/otp,fenollp/otp,jinshana/otp,bsmr-erlang/otp,massemanet/otp,goertzenator/otp,release-project/otp,bjorng/otp,cnbin/otp,Teino1978-Corp/otp,msantos/otp,lrascao/otp,awetzel/otp,palas/otp,lucafavatella/otp,jemsbhai/otp,platinumthinker/otp,saleyn/otp,RoadRunnr/otp,lantti/otp,VincentHHL/otp,paladim/otp,basho/otp,yangchengjian/otp,stolen/otp,VincentHHL/otp,marquisthunder/otp,sitexa/otp,aboroska/otp,sammoth-wazoku/otp,weisslj/otp,bugs-erlang-org/otp,tuncer/otp,paladim/otp,ferd/otp,kvakvs/otp,ahmedshafeeq/otp,ader1990/otp,bjorng/otp,basho/otp,NOMORECOFFEE/otp,matwey/otp,c-rack/otp,vinoski/otp,entropiae/otp,jj1bdx/otp,tuncer/otp,ahmedshafeeq/otp,palas/otp,aboroska/otp,beni55/otp,lucafavatella/otp,vic/otp,getong/otp,emile/otp,RaimoNiskanen/otp,release-project/otp,bernardd/otp,dgud/otp,aboroska/otp,uabboli/otp,hairyhum/otp,schlagert/otp,sdebnath/otp,erlang/otp,lhslll/otp,lrascao/otp,derek121/otp,jj1bdx/otp,getong/otp,basho/otp,erlang/otp,emile/otp,lemenkov/otp,emile/otp,msantos/otp,entropiae/otp,Teino1978-Corp/otp,erlang/otp,legoscia/otp,g-andrade/otp,vic/otp,c-rack/otp,beni55/otp,RJ/otp,vladdu/otp,falkevik/otp,bugs-erlang-org/otp,falkevik/otp,goertzenator/otp,emacsmirror/erlang,psyeugenic/otp,theom/otp,lemenkov/otp,theom/otp,benoitc/otp-1,enikki/otp,bugs-erlang-org/otp,weisslj/otp,RoadRunnr/otp,weisslj/otp,derek121/otp,sdebnath/otp,ahmedshafeeq/otp,lemenkov/otp,hairyhum/otp,yangchengjian/otp,benoitc/otp-1,schlagert/otp,ahmedshafeeq/otp,haguenau/otp,schlagert/otp,electricimp/otp,klarna/otp,RGafiyatullin/otp,goertzenator/otp,krishnakumar4a4/otp,tuncer/otp,bsmr-erlang/otp,fenollp/otp,mikpe/otp,lhslll/otp,electricimp/otp,weisslj/otp,derek121/otp,vladdu/otp,enikki/otp,vladdu/otp,RoadRunnr/otp,lucafavatella/otp,msantos/otp,aboroska/otp,bjorng/otp,sitexa/otp,dumbbell/otp,legoscia/otp,aboroska/otp,bsmr-erlang/otp,saleyn/otp,beni55/otp,theom/otp,release-project/otp,lemenkov/otp,release-project/otp,massemanet/otp,mujiatong/otp,matwey/otp,lianghaivv/otp,vladdu/otp,johanclaesson/otp,derek121/otp,jemsbhai/otp,cnbin/otp,haguenau/otp,bernardd/otp,goertzenator/otp,lightcyphers/otp,falkevik/otp,saleyn/otp,johanclaesson/otp,neeraj9/otp,ahmedshafeeq/otp,c-rack/otp,bjorng/otp,lucafavatella/otp,bsmr-erlang/otp,RGafiyatullin/otp,potatosalad/otp,theom/otp,isvilen/otp,rlipscombe/otp,haguenau/otp,rlipscombe/otp,rlipscombe/otp,derek121/otp,RGafiyatullin/otp,getong/otp,bernardd/otp,RaimoNiskanen/otp,release-project/otp,enikki/otp,tuncer/otp,stolen/otp,basho/otp,massemanet/otp,riverrun/otp,RichMorin/otp,vladdu/otp,mujiatong/otp,rlipscombe/otp,erlang/otp,jj1bdx/otp,entropiae/otp,jemsbhai/otp,ahmedshafeeq/otp,vic/otp,vinoski/otp,emile/otp,vinoski/otp,sammoth-wazoku/otp,riverrun/otp,haguenau/otp,weisslj/otp,Teino1978-Corp/erlang-otp,VincentHHL/otp,dgud/otp,vinoski/otp,getong/otp,RichMorin/otp,lantti/otp,vladdu/otp,jinshana/otp,lhslll/otp,basho/otp,NOMORECOFFEE/otp,entropiae/otp,sitexa/otp,RJ/otp,sdebnath/otp,lantti/otp,jinshana/otp,johanclaesson/otp,lhslll/otp,falkevik/otp,bernardd/otp,mikpe/otp,fenollp/otp,VincentHHL/otp,johanclaesson/otp,rlipscombe/otp,g-andrade/otp,lhslll/otp,cnbin/otp,massemanet/otp,RoadRunnr/otp,c-rack/otp,mikpe/otp,VincentHHL/otp,beni55/otp,legoscia/otp,GinjaNinja32/otp,jamesruan/otp,bernardd/otp,RGafiyatullin/otp,saleyn/otp,paulcager/otp,saleyn/otp,lemenkov/otp,stolen/otp,RaimoNiskanen/otp,RoadRunnr/otp,aboroska/otp,paulcager/otp,tuncer/otp,g-andrade/otp,sdebnath/otp,haguenau/otp,lightcyphers/otp,cnbin/otp,GinjaNinja32/otp,benoitc/otp-1,cobusc/otp,gjaldon/otp,lrascao/otp,Teino1978-Corp/erlang-otp,emile/otp,stolen/otp,NOMORECOFFEE/otp,RoadRunnr/otp,RGafiyatullin/otp,msantos/otp,saleyn/otp,benoitc/otp-1,ferd/otp,emile/otp,lucafavatella/otp,potatosalad/otp,schlagert/otp,derek121/otp,g-andrade/otp,paladim/otp,rlipscombe/otp,RichMorin/otp,ader1990/otp,theom/otp,hairyhum/otp,lrascao/otp,hairyhum/otp,jemsbhai/otp,kvakvs/otp,g-andrade/otp,bjorng/otp,vladdu/otp,lightcyphers/otp,dgud/otp,massemanet/otp,schlagert/otp,RaimoNiskanen/otp,benoitc/otp-1,marquisthunder/otp,krishnakumar4a4/otp,derek121/otp,fenollp/otp,isvilen/otp,klarna/otp,tuncer/otp,marquisthunder/otp,Teino1978-Corp/otp,lrascao/otp,klarna/otp,sitexa/otp,c-rack/otp,riverrun/otp,RaimoNiskanen/otp,erlang/otp,jinshana/otp,lucafavatella/otp,johanclaesson/otp,VincentHHL/otp,GinjaNinja32/otp,krishnakumar4a4/otp,aboroska/otp,gjaldon/otp,lhslll/otp,stolen/otp,jinshana/otp,dumbbell/otp,electricimp/otp,jamesruan/otp,lrascao/otp,entropiae/otp,massemanet/otp,tuncer/otp,sammoth-wazoku/otp,sammoth-wazoku/otp,psyeugenic/otp,stolen/otp,getong/otp,release-project/otp,lianghaivv/otp,matwey/otp,ferd/otp,dgud/otp,matwey/otp,vic/otp,dumbbell/otp,ader1990/otp,marquisthunder/otp,palas/otp,getong/otp,lucafavatella/otp,cobusc/otp,marquisthunder/otp,fenollp/otp,isvilen/otp,neeraj9/otp,awetzel/otp,gjaldon/otp,GinjaNinja32/otp,rlipscombe/otp,potatosalad/otp,enikki/otp,lianghaivv/otp,basho/otp,neeraj9/otp,g-andrade/otp,mujiatong/otp,electricimp/otp,bsmr-erlang/otp,lantti/otp,lianghaivv/otp,NOMORECOFFEE/otp,cnbin/otp,lightcyphers/otp,paulcager/otp,kvakvs/otp,GinjaNinja32/otp,mikpe/otp,bjorng/otp,goertzenator/otp,isvilen/otp,RaimoNiskanen/otp,platinumthinker/otp,mujiatong/otp,bjorng/otp,mujiatong/otp,g-andrade/otp,neeraj9/otp,lhslll/otp,emacsmirror/erlang,bernardd/otp,kvakvs/otp,entropiae/otp,paladim/otp,getong/otp,vladdu/otp,bsmr-erlang/otp,rlipscombe/otp,jj1bdx/otp,klarna/otp,RJ/otp,bernardd/otp,sitexa/otp,sdebnath/otp,hairyhum/otp,dumbbell/otp,lianghaivv/otp,hairyhum/otp,vinoski/otp,RichMorin/otp,haguenau/otp,mujiatong/otp,paladim/otp,sdebnath/otp,lightcyphers/otp,johanclaesson/otp,Teino1978-Corp/erlang-otp,yangchengjian/otp,saleyn/otp,kvakvs/otp,platinumthinker/otp,VincentHHL/otp,paladim/otp,RJ/otp,Teino1978-Corp/otp,RJ/otp,haguenau/otp,riverrun/otp,msantos/otp,krishnakumar4a4/otp,vic/otp,awetzel/otp,psyeugenic/otp,emacsmirror/erlang,lianghaivv/otp,jj1bdx/otp,RJ/otp,msantos/otp,RJ/otp,psyeugenic/otp,c-rack/otp,paladim/otp,GinjaNinja32/otp,platinumthinker/otp,gjaldon/otp,rlipscombe/otp,awetzel/otp,emacsmirror/erlang,lemenkov/otp,NOMORECOFFEE/otp,dgud/otp,beni55/otp,stolen/otp,mikpe/otp,jj1bdx/otp,c-rack/otp,yangchengjian/otp,schlagert/otp,ferd/otp,psyeugenic/otp,lemenkov/otp,isvilen/otp,ader1990/otp,falkevik/otp,sammoth-wazoku/otp,lightcyphers/otp,paulcager/otp,klarna/otp,massemanet/otp,ader1990/otp,platinumthinker/otp,Teino1978-Corp/erlang-otp,lucafavatella/otp,paulcager/otp,awetzel/otp,jinshana/otp,ferd/otp,mikpe/otp,beni55/otp,mujiatong/otp,vinoski/otp,massemanet/otp,gjaldon/otp,hairyhum/otp,RGafiyatullin/otp,electricimp/otp,uabboli/otp,kvakvs/otp,palas/otp,msantos/otp,dgud/otp,jj1bdx/otp,bjorng/otp,psyeugenic/otp,vic/otp,NOMORECOFFEE/otp,isvilen/otp,msantos/otp,psyeugenic/otp,ferd/otp,NOMORECOFFEE/otp,cnbin/otp,jj1bdx/otp,riverrun/otp,enikki/otp,uabboli/otp,vinoski/otp,lemenkov/otp,vinoski/otp,entropiae/otp,GinjaNinja32/otp,c-rack/otp,palas/otp,g-andrade/otp,awetzel/otp,RJ/otp,uabboli/otp,weisslj/otp,benoitc/otp-1,jemsbhai/otp,mikpe/otp,enikki/otp,RoadRunnr/otp,RichMorin/otp,electricimp/otp,basho/otp,erlang/otp,benoitc/otp-1,fenollp/otp,isvilen/otp,cobusc/otp,paladim/otp,dumbbell/otp,marquisthunder/otp,isvilen/otp,dumbbell/otp,jj1bdx/otp,tuncer/otp,emile/otp,bugs-erlang-org/otp,uabboli/otp,bugs-erlang-org/otp,RichMorin/otp,erlang/otp,g-andrade/otp,uabboli/otp,neeraj9/otp,release-project/otp,lantti/otp,goertzenator/otp,johanclaesson/otp,bernardd/otp,legoscia/otp,falkevik/otp,hairyhum/otp,mikpe/otp,uabboli/otp,NOMORECOFFEE/otp,krishnakumar4a4/otp