[PATCH v4] quartz: Fix crash when pVisible is NULL.

[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=78360

Your paranoid android.

=== w10pro64_ja (32 bit report) ===

quartz:
videorenderer.c:1078: Test failed: Wait failed.
videorenderer.c:1079: Test failed: Got hr 0x103.
videorenderer.c:1088: Test failed: Thread should block in Receive().

=== w10pro64_zh_CN (32 bit report) ===

quartz:
videorenderer.c:1098: Test failed: Got hr 0x80004005.

=== w10pro64 (64 bit report) ===

quartz:
videorenderer.c:1088: Test failed: Thread should block in Receive().

=== w10pro64_2scr (64 bit report) ===

quartz:
videorenderer.c:1098: Test failed: Got hr 0x80004005.

=== w10pro64_he (64 bit report) ===

quartz:
videorenderer.c:1098: Test failed: Got hr 0x80004005.

=== w10pro64_ja (64 bit report) ===

quartz:
videorenderer.c:1098: Test failed: Got hr 0x80004005.

[Jactry Zeng]

Hi Pengpeng,

On 9/9/20 1:07 PM, Pengpeng Dong wrote:
> BaseControlWindowImpl_get_Visible(IVideoWindow *iface, LONG *visi
>  TRACE("window %p, visible %p.\n", window, visible);
>
> - if(!visible)
> -
>    return E_POINTER;

Just a nitpick, please add a space after 'if'.
Also, IMO, a commit comment like "quartz: Handle NULL visible in IVideoWindow::get_Visible()." might be better. At least, we don't use 'pVisible' as its parameter name anymore.

Thanks for your contribution.