Rollup merge of #31878 - frewsxcv:path-cleanup, r=alexcrichton

None

Author: Manishearth

src/libstd/path.rs

@@ -226,7 +226,7 @@ mod platform {
                     }
                     _ => (),
                 }
-            } else if path.len() > 1 && path[1] == b':' {
+            } else if path.get(1) == Some(b':') {
                 // C:
                 let c = path[0];
                 if c.is_ascii() && (c as char).is_alphabetic() {
@@ -393,11 +393,8 @@ fn iter_after<A, I, J>(mut iter: I, mut prefix: J) -> Option<I>
     loop {
         let mut iter_next = iter.clone();
         match (iter_next.next(), prefix.next()) {
-            (Some(x), Some(y)) => {
-                if x != y {
-                    return None;
-                }
-            }
+            (Some(ref x), Some(ref y)) if x == y => (),
+            (Some(_), Some(_)) => return None,
             (Some(_), None) => return Some(iter),
             (None, None) => return Some(iter),
             (None, Some(_)) => return None,