[HttpClient] fix compat with cURL <= 7.37
[HttpClient] fix compat with cURL <= 7.37

hhamon/symfony,phramz/symfony,stof/symfony,mpdude/symfony,curry684/symfony,Tobion/symfony,Tobion/symfony,nicolas-grekas/symfony,d-ph/symfony,ogizanagi/symfony,nicolas-grekas/symfony,damienalexandre/symfony,ogizanagi/symfony,xabbuh/symfony,mpdude/symfony,HeahDude/symfony,nicolas-grekas/symfony,symfony/symfony,Tobion/symfony,curry684/symfony,paradajozsef/symfony,damienalexandre/symfony,ro0NL/symfony,paradajozsef/symfony,HeahDude/symfony,d-ph/symfony,oleg-andreyev/symfony,mpdude/symfony,oleg-andreyev/symfony,sgehrig/symfony,sgehrig/symfony,derrabus/symfony,phramz/symfony,symfony/symfony,ogizanagi/symfony,stof/symfony,hhamon/symfony,damienalexandre/symfony,stof/symfony,xabbuh/symfony,ro0NL/symfony,stof/symfony,xabbuh/symfony,derrabus/symfony,tucksaun/symfony,xabbuh/symfony,mpdude/symfony,Tobion/symfony,d-ph/symfony,phramz/symfony,sgehrig/symfony,d-ph/symfony,ogizanagi/symfony,hhamon/symfony,oleg-andreyev/symfony,ro0NL/symfony,hhamon/symfony,HeahDude/symfony,derrabus/symfony,oleg-andreyev/symfony,curry684/symfony,ro0NL/symfony,derrabus/symfony,symfony/symfony,curry684/symfony,phramz/symfony,HeahDude/symfony,tucksaun/symfony,symfony/symfony,nicolas-grekas/symfony,tucksaun/symfony,paradajozsef/symfony,tucksaun/symfony,damienalexandre/symfony,paradajozsef/symfony,sgehrig/symfony