Fix TypeError for Zend_Validate_File_Count property $_files #41
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PHP 8.0 returned this error:
TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /home/jiri/www/portal/vendor/magento/zendframework1/library/Zend/Validate/File/Count.php:257
Stack trace:
#0 /home/jiri/www/portal/vendor/magento/zendframework1/library/Zend/File/Transfer/Adapter/Abstract.php(649): Zend_Validate_File_Count->isValid()
#1 /home/jiri/www/portal/vendor/magento/zendframework1/library/Zend/File/Transfer/Adapter/Http.php(148): Zend_File_Transfer_Adapter_Abstract->isValid()
#2 /home/jiri/www/portal/vendor/magento/zendframework1/library/Zend/Form/Element/File.php(444): Zend_File_Transfer_Adapter_Http->isValid()
This patch fixing it.