`createClient` overrides http.Transport

[turboezh]

This line overrides Transport in custom http.Client.

resty/default.go

Line 300 in 7d81d55

c.SetTransport(&http.Transport{})

I think this line should be removed, it has no sense because transport already embedded in client.

In my case I lost proxy settings from my own http.Client.

[jeevatkm]

@turboezh Nice catch, thanks. It seems I missed this part when I introduced feature of accepting client. I will correct it.

[jeevatkm]

@turboezh I have corrected it on edge, to be released in v1.5. Thanks.