some more extensions for PDU impl

src/cfdp/pdu/metadata.rs

@@ -11,7 +11,7 @@ use alloc::vec::Vec;
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+#[derive(Default, Debug, Copy, Clone, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct MetadataGenericParams {
     pub closure_requested: bool,

src/cfdp/pdu/mod.rs

@@ -232,7 +232,8 @@ impl CommonPduConfig {
             LargeFileFlag::Normal,
             CrcFlag::NoCrc,
             Direction::TowardsReceiver,
-        ).unwrap()
+        )
+        .unwrap()
     }
 
     pub fn source_id(&self) -> UnsignedByteField {