Bug 307347 – [check-webkit-style] Fix false positive in safercpp/protected_getter_for_init checker

• Status: RESOLVED
• Resolution: FIXED
• Component: Tools / Tests

[David Kilzer (:ddkilzer)]

The `check-webkit-style` script produces false positives for code like:

```cpp
if (RefPtr document = viewportDocumentForFrame(protect(mainFrame())))
```

Error message:
```
error: [safercpp/protected_getter_for_init] Do not use protect() for variable initialization.
```

This is a false positive because `protect(mainFrame())` is an argument to `viewportDocumentForFrame()`, not the direct initializer for `document`.

The checker should only warn when `protect()`, `protectedFoo()`, or `checkedFoo()` functions are used as the direct initializer, not when they are nested inside other function calls.

[Radar WebKit Bug Importer]

<rdar://problem/169975626>

[David Kilzer (:ddkilzer)]

Pull request: https://github.com/WebKit/WebKit/pull/58222

[EWS]

Committed 307125@main (d93063803637): <https://commits.webkit.org/307125@main>

Reviewed commits have been landed. Closing PR #58222 and removing active labels.