MINOR: mux-h1: Rely on a H1S flag to know a WS key was found or not

h1_process_mux() is written to allow partial headers formatting. For now,
all headers are forwarded in one time. But it is still good to keep this
ability at the H1 mux level. So we must rely on a H1S flag instead of a
local variable to know a WebSocket key was found in headers to be able to
generate a key if necessary.

There is no reason to backport this patch.
2 files changed