[Bug 51049] New: Sea of Thieves crash when entering a lobby

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51049

Bug ID: 51049
           Summary: Sea of Thieves crash when entering a lobby
           Product: Wine
           Version: 6.7
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: secur32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

After you set Sail in "Sea of Thieves", it crash due to a secur32 error.

Prior to to commit f93284dfa44b060436c6a0617b51280abb3f24fc, it worked as
expected.

The crash occurs in function schan_InitializeSecurityContextW.  The scenario is
that it create a SCHAN_HANDLE_CTX handle, then later frees it.  Then attempts
to  create another SCHAN_HANDLE_CTX, however passes the same parameters through
except pInput (which is NULL).

Previous, this would return SEC_E_INCOMPLETE_MESSAGE, since the pInput was
NULL, however however now, it jumps through to 
else if (!is_dtls_context(ctx)) return SEC_E_INCOMPLETE_MESSAGE;

However the ctx has already been freed in this case and then crashes.