Another warning fix

src/song.rs

@@ -224,10 +224,10 @@ mod embedded {
 
                 return Ok(buffer);
             } else {
-                return Err(std::io::Error::new(
+                Err(std::io::Error::new(
                     std::io::ErrorKind::Other,
                     "Could not access last character of directory",
-                ));
+                ))
             }
         }
 
@@ -249,9 +249,7 @@ mod embedded {
                         Ok(buffer)
                     }
                 }
-                Err(er) => {
+                Err(er) => Err(er),
-                     Err(er)
-                }
             }
         }
     }