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check error returned by dns_decode
before this commit, sending "GET / HTTP/1.1" to server will cause uninitialized variable access.
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parent
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@ -2068,7 +2068,7 @@ read_dns(int fd, struct dnsfd *dns_fds, int tun_fd, struct query *q)
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if (raw_decode(packet, r, q, fd, dns_fds, tun_fd)) {
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return 0;
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}
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if (dns_decode(NULL, 0, q, QR_QUERY, packet, r) < 0) {
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if (dns_decode(NULL, 0, q, QR_QUERY, packet, r) <= 0) {
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return 0;
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}
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