update: null check to prevent error spam

[thakyZ]

There is a error log spam when the AtkResNode* passed to the method GetNodeIconArray has the method GetAsAtkComponentNode() called and returns null thus unable to get the Component then UldManager.

[thakyZ]

Also as a side note, more null checks may be necessary but I am unsure of this.

[Limiana]

Thank you! Why would it be null though? Might be better to investigate underlying issue.

[thakyZ]

I am unsure as to why, but it may be helpful for other plugin authors so that this mod isn't spamming the logs. Because the party list is completely shown when it errors so not sure as to why.