Use ? instead of .unwrap() when creating context in rclrs_examples

Author: nnmm

rclrs_examples/src/message_demo.rs

@@ -112,7 +112,7 @@ fn demonstrate_sequences() {
 fn demonstrate_pubsub() -> Result<(), Error> {
     println!("================== Interoperability demo ==================");
     // Demonstrate interoperability between idiomatic and RMW-compatible message types
-    let context = rclrs::Context::new(env::args()).unwrap();
+    let context = rclrs::Context::new(env::args())?;
     let mut node = context.create_node("message_demo")?;
 
     let idiomatic_publisher = node.create_publisher::<rclrs_example_msgs::msg::VariousTypes>(

rclrs_examples/src/minimal_publisher.rs

@@ -2,7 +2,7 @@ use anyhow::{Error, Result};
 use std::env;
 
 fn main() -> Result<(), Error> {
-    let context = rclrs::Context::new(env::args()).unwrap();
+    let context = rclrs::Context::new(env::args())?;
 
     let node = context.create_node("minimal_publisher")?;
 

rclrs_examples/src/minimal_subscriber.rs

@@ -3,7 +3,7 @@ use std::env;
 use anyhow::{Error, Result};
 
 fn main() -> Result<(), Error> {
-    let context = rclrs::Context::new(env::args()).unwrap();
+    let context = rclrs::Context::new(env::args())?;
 
     let mut node = context.create_node("minimal_subscriber")?;