fix of Notice: Undefined index: Address1

[bnowak]

Occurrence of BusinessAddress (and ShippingAddress) in response of command GetOrderList is optional. So according to documentation sometimes response can look like:

[...]
    <Order>
        <ArchiveParcelList>false</ArchiveParcelList>
        <BillingAddress i:nil="true"/>
        <Corporation i:nil="true"/>
        <CreationDate>2017-11-07T21:22:23.98</CreationDate>
[...]
        <OrderState i:nil="true"/>
    </Order>
[...]

In this case i getting notice: Undefined index: Address1
Parsing this response doesn't match the documentation.

[gcmikolaj]

+1

[gralec99]

Please approve

[rmalodobry]

Taking for consideration that documentations explicits says that this field is voluntary, this if checkout of additional is required to get ride off unnecessary notices.