Log Message:
Update to 6.46

Upstream changes:
6.46      2020-06-23 21:19:26Z
    - Fix a looping regression in 6.45 for redirect responses without
      a Location header (GH PR#342, Niko Tyni)

6.45      2020-06-08 14:51:28Z
    - Fix Client-Warning: Internal response sometimes reset (GH#341) (Jonathan
      Dahan and Julien Fiegehenn)

6.44      2020-04-14 19:37:45Z
    - Support basic authentication charset per RFC 7617 (GH#339) (Ville Skytt)
    - Fixed POD mistake. (GH PR#338. Sebastian Paaske Tørholm)