Log bad array on `cannot support tuple-like arrays` error

[david-crespo]

Without this it's hard to tell what the problem is.

dropshot/dropshot/src/schema_util.rs

Lines 860 to 879 in 1272cb4

	fn j2oas_array(
	array: &Option<Box<schemars::schema::ArrayValidation>>,
	) -> openapiv3::ArrayType {
	let arr = array.as_ref().unwrap();
	openapiv3::ArrayType {
	items: match &arr.items {
	Some(schemars::schema::SingleOrVec::Single(schema)) => {
	Some(box_reference_or(j2oas_schema(None, &schema)))
	}
	Some(schemars::schema::SingleOrVec::Vec(_)) => {
	panic!("OpenAPI v3.0.x cannot support tuple-like arrays")
	}
	None => None,
	},
	min_items: arr.min_items.map(|n| n as usize),
	max_items: arr.max_items.map(|n| n as usize),
	unique_items: arr.unique_items.unwrap_or(false),
	}
	}