avoid warning about uninitialize value
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@ -425,7 +425,7 @@ sub parse_config {
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my $ids = {};
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my $ids = {};
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my $digest = Digest::SHA1::sha1_hex($raw);
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my $digest = Digest::SHA1::sha1_hex(defined($raw) ? $raw : '');
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my $pri = 0;
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my $pri = 0;
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