Merge branch 'rs/checkout-am-fix-unborn'
A few codepaths in "checkout" and "am" working on an unborn branch tried to access an uninitialized piece of memory. * rs/checkout-am-fix-unborn: am: check return value of resolve_refdup before using hash checkout: check return value of resolve_refdup before using hash
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@ -2150,7 +2150,7 @@ static void am_abort(struct am_state *state)
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am_rerere_clear();
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curr_branch = resolve_refdup("HEAD", 0, curr_head.hash, NULL);
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has_curr_head = !is_null_oid(&curr_head);
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has_curr_head = curr_branch && !is_null_oid(&curr_head);
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if (!has_curr_head)
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hashcpy(curr_head.hash, EMPTY_TREE_SHA1_BIN);
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@ -833,7 +833,8 @@ static int switch_branches(const struct checkout_opts *opts,
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int flag, writeout_error = 0;
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memset(&old, 0, sizeof(old));
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old.path = path_to_free = resolve_refdup("HEAD", 0, rev.hash, &flag);
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old.commit = lookup_commit_reference_gently(rev.hash, 1);
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if (old.path)
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old.commit = lookup_commit_reference_gently(rev.hash, 1);
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if (!(flag & REF_ISSYMREF))
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old.path = NULL;
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