23.8.3 PutString example may not null-terminate

The final example in 24.8.3 includes:

``` csharp
unsafe static void PutString(string s, char* buffer, int bufSize) {
int len = s.Length;
if (len > bufSize) len = bufSize;
for (int i = 0; i < len; i++) buffer[i] = s[i];
for (int i = len; i < bufSize; i++) buffer[i] = (char)0;
}
```

If `len == bufSize`, this will write all those chars but not null-terminate. Other code we have in the standard appears to expect a null-terminated string. What should we do here? Only write `bufSize - 1` characters, then `'\0'`?