Andrew Cooper writes ("[PATCH v2 02/17] tools/libxl: Simplify callback handling
in libxl-save-helper"):
> The {save,restore}_callback helpers can have their scope reduced vastly, and
> helper_setcallbacks_{save,restore}() doesn't need to use a ternary operator to
> write 0 (meaning NULL) into an already zeroed structure.
>
> No functional change.
Acked-by: Ian Jackson <ian.jack...@eu.citrix.com>
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