[PATCH v3] wininet: Reset context length for http status 304

[Marvin]

Hi,

While running your changed tests, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=99068

Your paranoid android.


=== build (build log) ===

error: patch failed: dlls/wininet/tests/http.c:2375
Task: Patch failed to apply

=== debiant2 (build log) ===

error: patch failed: dlls/wininet/tests/http.c:2375
Task: Patch failed to apply

=== debiant2 (build log) ===

error: patch failed: dlls/wininet/tests/http.c:2375
Task: Patch failed to apply