argument naming

src/lib.rs

@@ -167,9 +167,9 @@ impl Level {
         Ok(Self { size, player, map })
     }
 
-    fn read_rle(map: &str) -> std::result::Result<Self, ReadError> {
+    fn read_rle(lvl: &str) -> std::result::Result<Self, ReadError> {
         Self::read(
-            map.chars()
+            lvl.chars()
                 .scan(1, |n, c| {
                     Some(match c {
                         '0'..='9' => {