Be defensive and don't mod by zero if denominator somehow gets set to
zero
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@ -658,7 +658,8 @@ static void validateBlackboxConfig()
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{
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int div;
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if (masterConfig.blackbox_rate_num >= masterConfig.blackbox_rate_denom) {
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if (masterConfig.blackbox_rate_num == 0 || masterConfig.blackbox_rate_denom == 0
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|| masterConfig.blackbox_rate_num >= masterConfig.blackbox_rate_denom) {
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masterConfig.blackbox_rate_num = 1;
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masterConfig.blackbox_rate_denom = 1;
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} else {
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