f - consolidate Quantity initialization

Author: jkczyz

lightning/src/offers/offer.rs

@@ -439,15 +439,6 @@ impl Quantity {
 		Quantity::Bounded(NonZeroU64::new(1).unwrap())
 	}
 
-	fn new(quantity: Option<u64>) -> Self {
-		match quantity {
-			None => Quantity::one(),
-			Some(0) => Quantity::Unbounded,
-			Some(1) => unreachable!(),
-			Some(n) => Quantity::Bounded(NonZeroU64::new(n).unwrap()),
-		}
-	}
-
 	fn to_tlv_record(&self) -> Option<u64> {
 		match self {
 			Quantity::Bounded(n) => {
@@ -529,8 +520,10 @@ impl TryFrom<OfferTlvStream> for OfferContents {
 		};
 
 		let supported_quantity = match quantity_max {
+			None => Quantity::one(),
+			Some(0) => Quantity::Unbounded,
 			Some(1) => return Err(SemanticError::InvalidQuantity),
-			_ => Quantity::new(quantity_max),
+			Some(n) => Quantity::Bounded(NonZeroU64::new(n).unwrap()),
 		};
 
 		if node_id.is_none() {