Fixes CVE-2019-10160: urlsplit does not handle NFKC normalization (2nd fix)
While the fix for CVE-2019-9936 is included in 3.7.3, the followup
regression fixes unfortunatly aren't.
https://bugs.python.org/issue36742
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>