[PATCH] Return unique_xmalloc_ptr from call_site_find_chain

[Simon Marchi]

On 2020-02-14 11:25 a.m., Tom Tromey wrote:
> call_site_find_chain returns a pointer that the caller must
> deallocated.  It seemed better here to return a unique_xmalloc_ptr

deallocated -> deallocate

Otherwise, LGTM.

Simon