Fix clippy in tedge_mapper: Remove let-unit-value

This patch fixes `clippy::let_unit_value`.

Signed-off-by: Matthias Beyer <matthias.beyer@ifm.com>

3 files changed, 8 insertions, 8 deletions

diff --git a/crates/core/tedge_mapper/src/az/converter.rs b/crates/core/tedge_mapper/src/az/converter.rs
index f7f4b7a9..b9da5b31 100644
--- a/crates/core/tedge_mapper/src/az/converter.rs
+++ b/crates/core/tedge_mapper/src/az/converter.rs
@@ -41,10 +41,10 @@ impl Converter for AzureConverter {
     }
 
     async fn try_convert(&mut self, input: &Message) -> Result<Vec<Message>, Self::Error> {
-        let () = self.size_threshold.validate(input)?;
+        self.size_threshold.validate(input)?;
         let default_timestamp = self.add_timestamp.then(|| self.clock.now());
         let mut serializer = ThinEdgeJsonSerializer::new_with_timestamp(default_timestamp);
-        let () = thin_edge_json::parser::parse_str(input.payload_str()?, &mut serializer)?;
+        thin_edge_json::parser::parse_str(input.payload_str()?, &mut serializer)?;
 
         let payload = serializer.into_string()?;
         Ok(vec![(Message::new(&self.mapper_config.out_topic, payload))])
diff --git a/crates/core/tedge_mapper/src/c8y/converter.rs b/crates/core/tedge_mapper/src/c8y/converter.rs
index 03123697..8a3b7197 100644
--- a/crates/core/tedge_mapper/src/c8y/converter.rs
+++ b/crates/core/tedge_mapper/src/c8y/converter.rs
@@ -99,7 +99,7 @@ where
         .try_into()
         .expect("topics that mapper should subscribe to");
 
-        let () = topic_filter.add_all(CumulocityMapper::subscriptions(&operations).unwrap());
+        topic_filter.add_all(CumulocityMapper::subscriptions(&operations).unwrap());
 
         let mapper_config = MapperConfig {
             in_topic_filter: topic_filter,
@@ -153,7 +153,7 @@ where
         .try_into()
         .expect("topics that mapper should subscribe to");
 
-        let () = topic_filter.add_all(CumulocityMapper::subscriptions(&operations).unwrap());
+        topic_filter.add_all(CumulocityMapper::subscriptions(&operations).unwrap());
 
         let mapper_config = MapperConfig {
             in_topic_filter: topic_filter,
@@ -348,7 +348,7 @@ where
     async fn try_convert(&mut self, message: &Message) -> Result<Vec<Message>, ConversionError> {
         match &message.topic {
             topic if topic.name.starts_with("tedge/measurements") => {
-                let () = self.size_threshold.validate(message)?;
+                self.size_threshold.validate(message)?;
                 self.try_convert_measurement(message)
             }
             topic
@@ -933,10 +933,10 @@ mod tests {
         let operation_logs = OperationLogs::try_new(log_dir.path().to_path_buf()).unwrap();
 
         let now = std::time::Instant::now();
-        let () = super::execute_operation("5", "sleep", "sleep_one", &operation_logs)
+        super::execute_operation("5", "sleep", "sleep_one", &operation_logs)
             .await
             .unwrap();
-        let () = super::execute_operation("5", "sleep", "sleep_two", &operation_logs)
+        super::execute_operation("5", "sleep", "sleep_two", &operation_logs)
             .await
             .unwrap();
 
diff --git a/crates/core/tedge_mapper/src/c8y/mapper.rs b/crates/core/tedge_mapper/src/c8y/mapper.rs
index 502bbc10..f341caa2 100644
--- a/crates/core/tedge_mapper/src/c8y/mapper.rs
+++ b/crates/core/tedge_mapper/src/c8y/mapper.rs
@@ -225,7 +225,7 @@ mod tests {
         });
 
         // publish `payload` to `pub_topic`
-        let () = broker.publish(pub_topic, payload).await?;
+        broker.publish(pub_topic, payload).await?;
 
         // check the `messages` returned contain `expected_msg`
         assert_received_all_expected(&mut messages, TEST_TIMEOUT_SECS, &[expected_msg]).await;