[fix] UnexpectedEof is ok and should not show an error

src/main.rs

@@ -55,7 +55,13 @@ fn run() -> LogtimesResult {
 
     loop {
         // read 1 char
-        input.read_exact(&mut buf)?;
+        if let Err(e) = input.read_exact(&mut buf) {
+            if e.kind() == ErrorKind::UnexpectedEof {
+                return Ok(());
+            } else {
+                return Err(e);
+            }
+        }
 
         // push that char to the "current line" buffer
         linebuf.push(buf[0]);