bug#43982: strerror return value

[Lars Ingebrigtsen]

Philipp Klaus Krause <pkk@spth.de> writes:

> This is just a very minor issue.
>
> emacs contains two calls to strerror where the result is assigned
> to a char *. However, according to the strerror specification, the
> string returned by strerror should never be changed, so it would be
> better to use const char * instead.
>
> See the attached patch for the trivial fix.

[...]

> -  char *s = strerror (errno);
> +  const char *s = strerror (errno);

Makes sense; I've now applied this to Emacs 28.

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