SPDY: fixed connection leak while waiting for request headers. If an error occurs in a SPDY connection, the c->error flag is set on every fake request connection, and its read or write event handler is called, in order to finalize it. But while waiting for request headers, it was a no-op since the read event handler had been set to ngx_http_empty_handler().

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


cat << END >> $NGX_AUTO_CONFIG_H

#ifndef $have
#define $have  1
#endif

END