rawWrite on closed File and closed pipe segfault

[dlangBugzillaToGithub]

kdevel reported this on 2024-07-25T09:47:05Z

Transfered from https://issues.dlang.org/show_bug.cgi?id=24681

Description

related: #21728, #21729

segfpipe.d
```
import std.stdio;
import std.process;

void main ()
{
   auto p = pipe ();
   p.writeEnd.close ();
   p.writeEnd.rawWrite ("test");
}
```

segffile.d
```
import std.stdio;
import std.file;

void main ()
{
   auto f = File ("/dev/null");
   f.close ();
   f.rawWrite ("test");
}
```