fix(cryptocompare): ignore currencies that don't have the RAW field

Signed-off-by: Taiga Nakayama <dora@dora-gt.jp>

crates/interledger-service-util/src/exchange_rate_providers/cryptocompare.rs

@@ -38,7 +38,7 @@ struct Record {
     #[serde(rename = "CoinInfo")]
     coin_info: CoinInfo,
     #[serde(rename = "RAW")]
-    raw: Raw,
+    raw: Option<Raw>,
 }
 
 #[derive(Deserialize, Debug)]
@@ -79,7 +79,8 @@ pub fn query_cryptocompare(
             let rates = res
                 .data
                 .into_iter()
-                .map(|asset| (asset.coin_info.name.to_uppercase(), asset.raw.usd.price))
+                .filter(|asset| asset.raw.is_some())
+                .map(|asset| (asset.coin_info.name.to_uppercase(), asset.raw.unwrap().usd.price))
                 .chain(once(("USD".to_string(), 1.0)));
             Ok(HashMap::from_iter(rates))
         })