When automatically redirecting an HTTP request, use the GET method when the

When automatically redirecting an HTTP request, use the GET method when the
original method was not HEAD or GET (fixes #45540)
#
# The RFC says that in case of 3xx code, "The action required MAY be
# carried out [...] *only if the method used in the second request is GET or
# HEAD*".
#
# This may not break anything as actually POST requests replying
# with a Location header never worked as the redirecting request was sent using
# the POST method, but without Entity-Body (and without Content-Length header,
# which caused the server to reply with a "411 Length Required" or to treat
# the request as GET).
#