[clang] [alpha.webkit.UncountedCallArgsChecker] Detect & ignore trivial function calls. (PR #81808)

[Ryosuke Niwa via cfe-commits]

rniwa wrote:

> @rniwa the test you modified in this change seems to be failing on at least one bot. Can you take a look or revert if you need time to investigate?
> 
> https://lab.llvm.org/buildbot/#/builders/123/builds/25095

Oh, interesting. I suppose this is due to:
```
# | error: 'expected-error' diagnostics seen but not expected: 
# |   File C:\b\slave\clang-x64-windows-msvc\llvm-project\clang\test\Analysis\Checkers\WebKit\uncounted-obj-arg.cpp Line 110: cast from pointer to smaller type 'unsigned long' loses information
```

https://github.com/llvm/llvm-project/pull/81808