Merge pull request #3203 from lexe-app/pr/description-as-inner

lightning-invoice: Add `Description::as_inner`

lightning-invoice/src/lib.rs

@@ -1526,6 +1526,11 @@ impl Description {
 	pub fn into_inner(self) -> UntrustedString {
 		self.0
 	}
+
+	/// Get a reference to the underlying description [`UntrustedString`]
+	pub fn as_inner(&self) -> &UntrustedString {
+		&self.0
+	}
 }
 
 impl Display for Description {