pack_one_ref(): use function peel_entry()
Change pack_one_ref() to call peel_entry() rather than using its own code for peeling references. Aside from sharing code, this lets it take advantage of the optimization introduced by 6c4a060d. Please note that we *could* use any peeled values that happen to already be stored in the ref_entries, which would avoid some object lookups for references that were already packed. But doing so would also propagate any peeling errors across runs of "git pack-refs" and give no way to recover from such errors. And "git pack-refs" isn't run often enough that the performance cost is a problem. So instead, add a new option to peel_entry() to force the entry to be re-peeled, and call it with that option set. Signed-off-by: NMichael Haggerty <mhagger@alum.mit.edu> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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