http-fetch: do not SEGV after fetching a bad pack idx file
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -442,6 +442,8 @@ static int setup_index(struct walker *walker, struct alt_base *repo, unsigned ch
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return -1;
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new_pack = parse_pack_index(sha1);
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if (!new_pack)
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return -1; /* parse_pack_index() already issued error message */
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new_pack->next = repo->packs;
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repo->packs = new_pack;
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return 0;
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