BUG/MINOR: http: add-header: header name copied twice

The header name is copied two time in the buffer. The first copy is a printf-like
function writing the name and the http separators in the buffer, and the second
form is a memcopy. This seems to be inherited from some changes. This patch
removes the printf like, format.

This patch must be backported in 1.6 and 1.5 versions
1 file changed