HTTP/2: fix canceling a request before a connection has been established
HTTP/2: fix canceling a request before a connection has been established

scrapy/scrapy,scrapy/scrapy,pawelmhm/scrapy,elacuesta/scrapy,pawelmhm/scrapy,pawelmhm/scrapy,elacuesta/scrapy,pablohoffman/scrapy,pablohoffman/scrapy,elacuesta/scrapy,pablohoffman/scrapy,scrapy/scrapy