Apparently it is possible to have chm file without #STRINGS in it, so we should not stop processing file at it. Fixes bug #12498

[Juan Lang]

>  > In that case, one fix per patch, please.  This fix and the other are
>  > unrelated:  one fixes a crash, the other deals with a missing #STRINGS
>  > stream.  Thanks,
>
>  No, I think that crash is only possible with my patch. Right now if
>  there is no #STRINGS it closes chm and stops processing.

Okay, I understand.  Your patch looks fine to me then.  You may wish
to resend, Alexandre may have other ideas ;-)
--Juan