TYPO3 Core

While inserting an value in the frontend with tce_main I get an error if there will be an table without columns, since the function getExcludeListArray (about line 4270) will work through all array.

I solved it with inserting an if(is_array($TCA[$table]['columns'])){
}

around the code, but I'm not sure about it, why it's neccessary to run through the whole TCA Array, when I know, which table I wanted to change.

So maybe just looking at the table to change should be the better way?
(issue imported from #M785)