Refine code

Author: Kai Luo

library/std/src/sys/unix/os.rs

@@ -497,12 +497,9 @@ pub fn current_exe() -> io::Result<PathBuf> {
     if let Some(p) = getenv(OsStr::from_bytes("PATH".as_bytes())) {
         for search_path in split_paths(&p) {
             let pb = search_path.join(&path);
-            if pb.is_file() && let Ok(metadata) = crate::fs::metadata(&pb) {
-                if metadata.permissions().mode() & 0o111 != 0 {
-                    return pb.canonicalize();
-                }
-            } else {
-                continue;
+            if pb.is_file() && let Ok(metadata) = crate::fs::metadata(&pb) &&
+               metadata.permissions().mode() & 0o111 != 0 {
+                return pb.canonicalize();
             }
         }
     }