Simplify the guards for cowboy_http_req:body/2
Simplify the guards for cowboy_http_req:body/2

chef/cowboy,heroku/cowboy,unisontech/cowboy,callsign-core/cowboy_hybi00,Reimerei/cowboy,yangchengjian/cowboy,omusico/cowboy,paulperegud/cowboy,acrispin/cowboy,essen/cowboy,linearregression/cowboyku,noname007/cowboy,bsmr-erlang/cowboy,rabbitmq/cowboy,MSch/cowboy,ninenines/cowboy,manastech/cowboy,callsign-core/cowboy_hybi00,K2InformaticsGmbH/cowboy,layerhq/cowboy,dangjun625/cowboy,imdeps/cowboy,grahamrhay/cowboy,nviennot/cowboy,lpgauth/cowboy,rbalint/pkg-erlang-cowboy,turtleDeng/cowboy,276361270/cowboy,LineMetrics/cowboy,venkateshreddy/cowboy,pap/cowboy,cad627/cowboy,essen/cowboy,CrankWheel/cowboy,bobos/ecweb,yangchengjian/cowboy,sile/cowboy,layerhq/cowboy,ferd/cowboyku,cad627/cowboy,lpgauth/cowboy,binarin/cowboy,kivra/cowboy,piboye/cowboy,binarin/cowboy,hairyhum/cowboy,piboye/cowboy,LineMetrics/cowboy,odo/cowboy,heroku/cowboyku,unisontech/cowboy,LineMetrics/cowboy,manastech/cowboy,heroku/cowboy