dmime: Dangling references fix

[Alexandre Julliard]

Andrew Talbot <Andrew.Talbot at talbotville.com> writes:

> Changelog:
>     dmime: Dangling references fix.

The right way is to use wine_dbg_sprintf("%s") to allocate a copy of
the buffer to return.

-- 
Alexandre Julliard
julliard at winehq.org