Fix test_proxy_connect.py for py3.5.
Fix test_proxy_connect.py for py3.5.

pawelmhm/scrapy,dangra/scrapy,pawelmhm/scrapy,starrify/scrapy,starrify/scrapy,starrify/scrapy,eLRuLL/scrapy,pawelmhm/scrapy,scrapy/scrapy,scrapy/scrapy,elacuesta/scrapy,elacuesta/scrapy,dangra/scrapy,pablohoffman/scrapy,elacuesta/scrapy,scrapy/scrapy,eLRuLL/scrapy,dangra/scrapy,pablohoffman/scrapy,eLRuLL/scrapy,pablohoffman/scrapy