Add a defensive check for negative values - silences compiler warnings
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@ -80,6 +80,7 @@ static void pulsometer_display_measurement(pulsometer_state_t *pulsometer) {
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char buf[5];
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int16_t value = pulsometer->pulses;
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if (value < 0) value = 0;
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if (value > 9999) value = 9999;
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snprintf(buf, sizeof(buf), "%-4hd", value);
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