Conditional

[Rustamsher]

The following has been taken from a sports article:

However, things could have been different for the Catalans if the officials wouldn’t make a mistake in the 30’th minute, disallowing the Blaugrana a clear goal.

I just know that hadn't made would be correct in lieu of wouldn't make in the if-clause. However, is the sentence above grammatically correct?

Thanks.

[Alan]

You are quite correct: "hadn't made" would be correct here.