Remove useless as usize

Author: samueltardieu

src/lib.rs

@@ -342,7 +342,7 @@ impl Iterator for Paths {
         if let Some(scope) = self.scope.take() {
             if !self.dir_patterns.is_empty() {
                 // Shouldn't happen, but we're using -1 as a special index.
-                assert!(self.dir_patterns.len() < !0 as usize);
+                assert!(self.dir_patterns.len() < !0);
 
                 fill_todo(&mut self.todo, &self.dir_patterns, 0, &scope, self.options);
             }
@@ -360,7 +360,7 @@ impl Iterator for Paths {
 
             // idx -1: was already checked by fill_todo, maybe path was '.' or
             // '..' that we can't match here because of normalization.
-            if idx == !0 as usize {
+            if idx == !0 {
                 if self.require_dir && !is_dir(&path) {
                     continue;
                 }
@@ -839,7 +839,7 @@ fn fill_todo(
             // We know it's good, so don't make the iterator match this path
             // against the pattern again. In particular, it can't match
             // . or .. globs since these never show up as path components.
-            todo.push(Ok((next_path, !0 as usize)));
+            todo.push(Ok((next_path, !0)));
         } else {
             fill_todo(todo, patterns, idx + 1, &next_path, options);
         }