pkcs15-tccardos: Avoid negative indexing
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@ -215,7 +215,7 @@ static int parse_EF_CardInfo(sc_pkcs15_card_t *p15card)
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/* read EF_CardInfo1 */
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r = read_file(p15card->card, "3F001003b200", info1, &info1_len);
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if (r != SC_SUCCESS)
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if (r != SC_SUCCESS || info1_len < 4)
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return SC_ERROR_WRONG_CARD;
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/* read EF_CardInfo2 */
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r = read_file(p15card->card, "3F001003b201", info2, &info2_len);
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