refactoring: remove unneeded metadata call

src/builtins/ls.rs

@@ -23,17 +23,21 @@ impl Builtin for Ls {
                     continue;
                 }
             };
+            let metadata = match metadata(entry.path()) {
+                Ok(m) => m,
+                Err(_) => {
+                    continue;
+                }
+            };
             let file_name = entry.file_name().to_string_lossy().to_string();
             let mut file_type = "unknown";
-            let tmp = entry.file_type().unwrap();
-            if tmp.is_dir() {
+            if metadata.file_type().is_dir() {
                 file_type = "dir"
-            } else if tmp.is_file() {
+            } else if metadata.file_type().is_file() {
                 file_type = "file"
-            } else if tmp.is_symlink() {
+            } else if metadata.file_type().is_symlink() {
                 file_type = "link"
             }
-            let metadata = metadata(entry.path()).unwrap();
             println!(
                 "{:} | {:4} | {}",
                 right_padding(&file_name, 16),