Why this function just decides to not call another function and do its thing instead?

[solidstate1991 via Digitalmars-d-learn]

Code found here: 
https://github.com/ZILtoid1991/newxml/blob/main/source/newxml/domimpl.d#L1984

Even changing the code to this:
```d
auto res = firstAttr;
    while (res)
    {
        if (res.localName != localName || res.namespaceURI != 
namespaceURI)
            res = res._nextAttr;
        else
            break;
    }
    return res;
```

Does not always seem to call this: 
https://github.com/ZILtoid1991/newxml/blob/main/source/newxml/domstring.d#L252

And then instead just decides that the `localName` and 
`namespaceURI` pairs are not equal, and in those cases the Visual 
Studio debugger doesn't detect any entering into any of the 
`DOMString.equals` overrides, all while the debugger shows those 
strings are equal.