requests can't properly handle redirects if the response body is encoded in something else than 'utf8'

Just like in the topic. The response body is encoded in iso-8859-2 and the location happens to contain non-ascii character so that it results in UnicodeDecodeError being thrown.

Expected Result

Flawless execution of the code.

Actual Result

UnicodeDecodeError

Reproduction Steps

import requests
requests.get("http://www.biblia.deon.pl/ksiega.php?id=3")

System Information

$ python -m requests.help

{
  "chardet": {
    "version": "3.0.4"
  }, 
  "cryptography": {
    "version": "2.3"
  }, 
  "idna": {
    "version": "2.7"
  }, 
  "implementation": {
    "name": "CPython", 
    "version": "2.7.15+"
  }, 
  "platform": {
    "release": "4.18.0-13-generic", 
    "system": "Linux"
  }, 
  "pyOpenSSL": {
    "openssl_version": "1010100f", 
    "version": "18.0.0"
  }, 
  "requests": {
    "version": "2.19.0"
  }, 
  "system_ssl": {
    "version": "1010100f"
  }, 
  "urllib3": {
    "version": "1.23"
  }, 
  "using_pyopenssl": true
}

This command is only available on Requests v2.16.4 and greater. Otherwise,
please provide some basic information about your system (Python version,
operating system, &c).

Start by running the provided requests.get reproduction against the biblia.deon.pl URL and trace the redirect handling path. Check how the response encoding and non-ASCII Location value interact, then add coverage for an iso-8859-2 response with a redirect. Done means the request follows the redirect without raising UnicodeDecodeError.