[Analyzer] anomalous error message

I am using clang-tidy (LLVM version 21.0.0git) on Windows 10 Pro.

I recently ran it on a new project, and got this error:

```
D:/SourceCode/Git/binclock_redux/config.cpp:90:8: note: Assuming ‘result’ is equal to 0
90 | if (result != 0)
| ^~~~~~~~~~~
D:/SourceCode/Git/binclock_redux/config.cpp:90:4: note: Taking false branch
90 | if (result != 0)
| ^
```

yet this is the code at line 90:

```c++
LRESULT result = derive_filename_from_exec(ini_name, (TCHAR ) _T(“.ini”)) ;
if (result != 0) {
return result;
}
```

and that function is definitely capable of returning either 0 or non-0 results…
Why do I get these reports (there are several of them) ??

==================================================
Later note:
Actually, these spurious warnings are apparently caused by another (valid) warning:

D:/SourceCode/Git/binclock_redux/config.cpp:140:11: note: Opened stream never closed. Potential resource leak
140 | return 0;

Once I added
fclose(fd);
to the end of this function, all of the other 12 warnings went away…

still… were these other warnings desirable, for some reason??

Start by reproducing the clang-tidy diagnostics from config.cpp around line 90, then inspect the stream-handling path around line 140 and compare results with and without fclose(fd). Determine whether the additional path-sensitive notes are expected after the resource-leak warning; done means the behavior is explained and any necessary analyzer change is covered by an appropriate regression case.

Written by the indexing model from the issue text.