Zend_Db_Table_Abstract::find not working with empty values in primary keys

[GustavR]

Zend_Db_Table_Abstract::find
lines 1307 to 1322

/**
 * PHP 7.2 PATCH -->
 */
if (is_array($keyValues) || $keyValues instanceof \Countable) {
    $keyValuesCount = count($keyValues);
} else {
    if (null == $keyValues) {
        $keyValuesCount = 0;
    } else {
        $keyValuesCount = 1;
    }
}
#$keyValuesCount = count($keyValues);
/**
 * PHP 7.2 PATCH <--
 */

should be

/**
 * PHP 7.2 PATCH -->
 */
if (is_array($keyValues) || $keyValues instanceof \Countable) {
    $keyValuesCount = count($keyValues);
} else {
    if (null === $keyValues) {
        $keyValuesCount = 0;
    } else {
        $keyValuesCount = 1;
    }
}
#$keyValuesCount = count($keyValues);
/**
 * PHP 7.2 PATCH <--
 */

Mind the null == vs null ===
Else when you insert "" as a value into a primary key an Exception will be thrown.
In PHP 5.6 count("") is 1 not 0, but null == "", so that doesnt add up.