PhpStan: some fixes

[sreichel]

Some progress here ... :)

[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[kiatng]

magento-lts/app/code/core/Mage/Checkout/Block/Cart/Shipping.php

Lines 56 to 67 in d3b15b3

	/**
	* Get Address Model
	*
	* @return Mage_Sales_Model_Quote_Address
	*/
	public function getAddress()
	{
	if (empty($this->_address)) {
	$this->_address = $this->getQuote()->getShippingAddress();
	}
	return $this->_address;
	}

$_address cannot be an array:

Suggested change

	* @var array
	* @var Mage_Sales_Model_Quote_Address|array
	*/
	protected $_address = [];
	* @var Mage_Sales_Model_Quote_Address
	*/
	protected $_address;

What do you think?