Remove newline when writing http post/put data
Remove newline when writing http post/put data

When writing post data, adding an extra newline may cause some
web servers to close the connection before sending a response
because the extra newline isn’t accounted for in the post/put data’s
content length. Removing the newline seems to fix the problem. This was
encountered posting a capabilities document to `chromedriver`’s
/session endpoint. An alternate fix is to include the new line in the
content-length calculation.

vyzo/gerbil,vyzo/gerbil,vyzo/gerbil