`@findex` within paragraph doesn't work

[Werner LEMBERG]

[texinfo.tex 2023-03-13.20]

Consider the following snippet.

```
\input texinfo

@findex{foo}
@code{foo},
@findex{bar}
@code{bar},
@findex{baz}
@code{baz}

@bye
```

This no longer works as expected – with version 2022-12-19.22 the
output is OK (I didn't bisect to find the exact last working version,
though).


    Werner