A few more fixes to httpclient multipart
A few more fixes to httpclient multipart

haiodo/Nim,gokr/Nim,greyanubis/Nim,nanoant/Nim,BlaXpirit/nim,russpowers/Nim,singularperturbation/Nim,tulayang/Nim,dom96/Nim,haiodo/Nim,Salafit/Nim,xland/Nim,Dhertz/Nim,bvssvni/Nim,tulayang/Nim,jfhg/Nim,fredericksilva/Nim,zachaysan/Nim,haiodo/Nim,douglas-larocca/Nim,JCavallo/Nim,mbaulch/Nim,SSPkrolik/Nim,sarvex/Nim-lang,kirbyfan64/Nim,singularperturbation/Nim,nanoant/Nim,russpowers/Nim,reactormonk/nim,reactormonk/nim,jfhg/Nim,BlaXpirit/nim,nafsaka/Nim,russpowers/Nim,gokr/Nim,nanoant/Nim,reactormonk/nim,SSPkrolik/Nim,sarvex/Nim-lang,kirbyfan64/Nim,haiodo/Nim,xland/Nim,nanoant/Nim,kirbyfan64/Nim,msmith491/Nim,sferik/Nim,jsanjuas/Nim,Matt14916/Nim,tulayang/Nim,bvssvni/Nim,xland/Nim,MrJohz/Nim,sarvex/Nim-lang,fredericksilva/Nim,singularperturbation/Nim,endragor/Nim,sferik/Nim,kirbyfan64/Nim,zachaysan/Nim,mbaulch/Nim,singularperturbation/Nim,russpowers/Nim,kirbyfan64/Nim,greyanubis/Nim,nafsaka/Nim,Salafit/Nim,jsanjuas/Nim,nanoant/Nim,sarvex/Nim-lang,MrJohz/Nim,Senketsu/Nim,haiodo/Nim,Senketsu/Nim,jfhg/Nim,endragor/Nim,douglas-larocca/Nim,bvssvni/Nim,greyanubis/Nim,tmm1/Nim,reactormonk/nim,bvssvni/Nim,haiodo/Nim,sferik/Nim,zachaysan/Nim,Dhertz/Nim,douglas-larocca/Nim,douglas-larocca/Nim,SSPkrolik/Nim,Senketsu/Nim,singularperturbation/Nim,reactormonk/nim,jfhg/Nim,Senketsu/Nim,mbaulch/Nim,mbaulch/Nim,tmm1/Nim,sferik/Nim,kirbyfan64/Nim,fmamud/Nim,greyanubis/Nim,Salafit/Nim,Dhertz/Nim,Senketsu/Nim,Salafit/Nim,reactormonk/nim,gokr/Nim,jfhg/Nim,JCavallo/Nim,reactormonk/nim,SSPkrolik/Nim,douglas-larocca/Nim,dom96/Nim,dom96/Nim,SSPkrolik/Nim,nimLuckyBull/Nim,xland/Nim,nafsaka/Nim,Matt14916/Nim,russpowers/Nim,greyanubis/Nim,Salafit/Nim,nimLuckyBull/Nim,fredericksilva/Nim,tmm1/Nim,MrJohz/Nim,nimLuckyBull/Nim,xland/Nim,Senketsu/Nim,judofyr/Nim,fredericksilva/Nim,mbaulch/Nim,fredericksilva/Nim,mbaulch/Nim,judofyr/Nim,zachaysan/Nim,msmith491/Nim,fredericksilva/Nim,tulayang/Nim,tulayang/Nim,fmamud/Nim,judofyr/Nim,reactormonk/nim,BlaXpirit/nim,russpowers/Nim,nimLuckyBull/Nim,dom96/Nim,singularperturbation/Nim,Dhertz/Nim,endragor/Nim,gokr/Nim,jsanjuas/Nim,russpowers/Nim,fmamud/Nim,msmith491/Nim,Matt14916/Nim,judofyr/Nim,BlaXpirit/nim,gokr/Nim,bvssvni/Nim,SSPkrolik/Nim,JCavallo/Nim,SSPkrolik/Nim,gokr/Nim,SSPkrolik/Nim,fmamud/Nim,nimLuckyBull/Nim,judofyr/Nim,Senketsu/Nim,singularperturbation/Nim,tmm1/Nim,Matt14916/Nim,endragor/Nim,msmith491/Nim,sferik/Nim,tmm1/Nim,sarvex/Nim-lang,Matt14916/Nim,JCavallo/Nim,douglas-larocca/Nim,nafsaka/Nim,kirbyfan64/Nim,tmm1/Nim,JCavallo/Nim,bvssvni/Nim,JCavallo/Nim,Matt14916/Nim,JCavallo/Nim,sferik/Nim,judofyr/Nim,endragor/Nim,gokr/Nim,Dhertz/Nim,sferik/Nim,jsanjuas/Nim,MrJohz/Nim,nafsaka/Nim,zachaysan/Nim,jsanjuas/Nim,judofyr/Nim,tulayang/Nim,msmith491/Nim,douglas-larocca/Nim,Salafit/Nim,jfhg/Nim,fmamud/Nim,BlaXpirit/nim,MrJohz/Nim,dom96/Nim,BlaXpirit/nim,nanoant/Nim,sarvex/Nim-lang,haiodo/Nim,xland/Nim,jfhg/Nim,Dhertz/Nim,msmith491/Nim,nafsaka/Nim,zachaysan/Nim,judofyr/Nim,mbaulch/Nim,gokr/Nim,Dhertz/Nim,fmamud/Nim,fmamud/Nim,jsanjuas/Nim,nimLuckyBull/Nim,MrJohz/Nim,tmm1/Nim,msmith491/Nim,dom96/Nim,sferik/Nim,greyanubis/Nim,Matt14916/Nim,Salafit/Nim,douglas-larocca/Nim,nimLuckyBull/Nim,kirbyfan64/Nim,jsanjuas/Nim,greyanubis/Nim,fredericksilva/Nim,BlaXpirit/nim,xland/Nim,sarvex/Nim-lang,endragor/Nim,nanoant/Nim,BlaXpirit/nim,MrJohz/Nim,endragor/Nim,bvssvni/Nim,zachaysan/Nim,dom96/Nim,nafsaka/Nim,fredericksilva/Nim