[PATCH] wininet: Free security context in failure case.

[Marvin]

Hi,

While running your changed tests on Windows, 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=45063

Your paranoid android.


=== debian9 (32 bit report) ===

wininet:
Unhandled exception: page fault on read access to 0x0000003c in 32-bit code (0x7d75e1b0).

Report errors:
wininet:http crashed (c0000005)

=== debian9 (32 bit Chinese:China report) ===

wininet:
Unhandled exception: page fault on read access to 0x0000003c in 32-bit code (0x7d5c31b0).

Report errors:
wininet:http crashed (c0000005)

=== debian9 (32 bit WoW report) ===

wininet:
Unhandled exception: page fault on read access to 0x0000003c in 32-bit code (0xf71eb1b0).

Report errors:
wininet:http crashed (c0000005)

=== debian9 (64 bit WoW report) ===

wininet:
Unhandled exception: page fault on read access to 0x00000068 in 64-bit code (0x00007fda24148ef0).

Report errors:
wininet:http crashed (c0000005)