CGSHWCaptureWindowList should have CF_RETURNS_RETAINED

https://bugs.webkit.org/show_bug.cgi?id=290245

Reviewed by Geoffrey Garen.

Annotate CGSHWCaptureWindowList with CF_RETURNS_RETAINED.

* Source/WebCore/PAL/pal/spi/cg/CoreGraphicsSPI.h:

Canonical link: https://commits.webkit.org/292541@main

Author: rniwa

Source/WebCore/PAL/pal/spi/cg/CoreGraphicsSPI.h

@@ -433,7 +433,7 @@ void CGPathAddContinuousRoundedRect(CGMutablePathRef, const CGAffineTransform*,
 bool CGDisplayUsesForceToGray(void);
 
 CGSConnectionID CGSMainConnectionID(void);
-CFArrayRef CGSHWCaptureWindowList(CGSConnectionID, CGSWindowIDList windowList, CGSWindowCount, CGSWindowCaptureOptions);
+CFArrayRef CGSHWCaptureWindowList(CGSConnectionID, CGSWindowIDList windowList, CGSWindowCount, CGSWindowCaptureOptions) CF_RETURNS_RETAINED;
 CGError CGSSetConnectionProperty(CGSConnectionID, CGSConnectionID ownerCid, CFStringRef key, CFTypeRef value);
 CGError CGSCopyConnectionProperty(CGSConnectionID, CGSConnectionID ownerCid, CFStringRef key, CFTypeRef *value);
 CGError CGSGetScreenRectForWindow(CGSConnectionID, CGSWindowID, CGRect *);