apply clippy fixes

Author: digizeph

src/rpki/cloudflare.rs

@@ -102,10 +102,7 @@ impl RpkiTrie {
         for roa in data.roas {
             let prefix = roa.prefix.parse::<IpNet>()?;
             let max_length = roa.max_length;
-            let rir = match Rir::from_str(roa.ta.as_str()) {
-                Ok(rir) => Some(rir),
-                Err(_) => None,
-            };
+            let rir = Rir::from_str(roa.ta.as_str()).ok();
             let roa_entry = RoaEntry {
                 prefix,
                 asn: roa.asn,

src/rpki/ripe_historical.rs

@@ -53,15 +53,9 @@ impl RpkiTrie {
                 Err(_) => continue,
             };
             let not_before =
-                match NaiveDateTime::parse_from_str(fields.next().unwrap(), "%Y-%m-%d %H:%M:%S") {
-                    Ok(t) => Some(t),
-                    Err(_) => None,
-                };
+                NaiveDateTime::parse_from_str(fields.next().unwrap(), "%Y-%m-%d %H:%M:%S").ok();
             let not_after =
-                match NaiveDateTime::parse_from_str(fields.next().unwrap(), "%Y-%m-%d %H:%M:%S") {
-                    Ok(t) => Some(t),
-                    Err(_) => None,
-                };
+                NaiveDateTime::parse_from_str(fields.next().unwrap(), "%Y-%m-%d %H:%M:%S").ok();
             let roa_entry = RoaEntry {
                 prefix,
                 asn,