fix: apply comments

ibc-primitives/src/types/timestamp.rs

@@ -285,9 +285,9 @@ impl scale_info::TypeInfo for Timestamp {
 
 #[derive(Debug, Display, derive_more::From)]
 pub enum TimestampError {
-    /// failed to parse integer error: {0}
+    /// failed to parse integer: {0}
     FailedToParseInt(ParseIntError),
-    /// failed try from integer error: {0}
+    /// failed try_from on integer: {0}
     FailedTryFromInt(TryFromIntError),
     /// failed to convert offset date: {0}
     FailedToConvert(time::error::ComponentRange),
@@ -303,6 +303,7 @@ impl std::error::Error for TimestampError {
         match &self {
             Self::FailedToParseInt(e) => Some(e),
             Self::FailedTryFromInt(e) => Some(e),
+            Self::FailedToConvert(e) => Some(e),
             _ => None,
         }
     }

ibc-testkit/src/testapp/ibc/core/core_ctx.rs

@@ -50,9 +50,7 @@ where
         let host_cons_state = self.host_consensus_state(&host_height)?;
         let timestamp = host_cons_state
             .timestamp()
-            .map_err(|e| HostError::InvalidState {
-                description: e.to_string(),
-            })?;
+            .map_err(HostError::invalid_state)?;
         Ok(timestamp)
     }