BUG/MAJOR: Fix crash in http_get_fhdr with exactly MAX_HDR_HISTORY headers

Similar issue was fixed in 67dad27, but the fix is incomplete. Crash still
happened when utilizing req.fhdr() and sending exactly MAX_HDR_HISTORY
headers.

This fix needs to be backported to 1.5 and 1.6.

Signed-off-by: Nenad Merdanovic <nmerdan@anine.io>
1 file changed