[PATCH][C++] Fix PR32609, ICE during htab_clear_slot

[Mark Mitchell]

Richard Guenther wrote:
> This fixes PR32609 by using htab_remove_elt to remove the element from
> the hashtable after recursing.  Using htab_clear_slot without re-looking 
> up the element is not safe with intermediate hash table 
> insertions/removals.

Thank you for cleaning up my mess!

-- 
Mark Mitchell
CodeSourcery
mark@codesourcery.com
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