Refactor code to be slightly more idiomatic, maybe

2022/day01/src/main.rs

@@ -7,12 +7,12 @@ fn read_lines(filename: &str) -> io::Result<io::Lines<io::BufReader<File>>> {
     Ok(io::BufReader::new(file).lines())
 }
 
-fn main() {
+fn main() -> Result<(), io::Error> {
     let mut max = 0;
     let mut current = 0;
 
-    for line in read_lines("input.txt").unwrap() {
-        let text = line.unwrap();
+    for line in read_lines("input.txt")? {
+        let text = line?;
         current = match text.parse::<i32>() {
             Ok(value) => current + value,
             Err(_) => {
@@ -23,4 +23,5 @@ fn main() {
     }
 
     println!("{}", max);
+    Ok(())
 }