asn1: Avoid integer overflow
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18475
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@ -731,7 +731,7 @@ int sc_asn1_decode_integer(const u8 * inbuf, size_t inlen, int *out)
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}
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if (is_negative) {
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/* Calculate Two's complement from previously positive number */
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a = -1 * (a + 1);
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a = (-1 * a) - 1;
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}
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*out = a;
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return 0;
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