clippy: Fix various clippy warnings throughout the code (#33003)

* replace u64::max_value() with u64::MAX

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* removed redundant import

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* Fixed dereference

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* Fixed a probable bug

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* fixed imports

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* fixed dereference

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* dereference formatting

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* removed unnessicary number imports

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* removed unnessicary number imports

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* removed excess borrow

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* ran mach fmt

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* fixed doc comment

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* removed deref on an immutable reference

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* fixed minor syntax error

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* reverted clamping

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* formatting

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

* reverted final clamp

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

---------

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>
Co-authored-by: Ashwin Naren <ashwin@pixelators.org>

components/layout_2020/display_list/mod.rs

@@ -1006,7 +1006,7 @@ impl<'a> BuilderForBoxFragment<'a> {
             repeat_vertical: border_image_repeat.1.to_webrender(),
         });
         builder.wr().push_border(
-            &common,
+            common,
             border_image_area.to_box2d(),
             border_image_widths,
             details,

components/layout_2020/flexbox/layout.rs

@@ -220,7 +220,7 @@ impl FlexContainer {
         let mut item_infos = vec![];
 
         let container_is_horizontal = self.style.writing_mode.is_horizontal();
-        let flex_direction = used_flex_direction(&*self.style);
+        let flex_direction = used_flex_direction(&self.style);
         let flex_axis = FlexAxis::from(flex_direction);
         let flex_wrap = self.style.get_position().flex_wrap;
         let flex_wrap_reverse = match flex_wrap {
@@ -1262,7 +1262,7 @@ impl InitialFlexLineLayout<'_> {
         let mut max_ascent = Au::zero();
         let mut max_descent = Au::zero();
         let mut max_outer_hypothetical_cross_size = Au::zero();
-        for (item_result, item) in item_layout_results.iter().zip(&*items) {
+        for (item_result, item) in item_layout_results.iter().zip(items) {
             // TODO: check inline-axis is parallel to main axis, check no auto cross margins
             if matches!(
                 item.align_self.0.value(),

components/layout_2020/fragment_tree/containing_block.rs

@@ -28,7 +28,8 @@ pub(crate) struct ContainingBlockManager<'a, T> {
     ///      element is split across multiple lines, the containing block is
     ///      undefined.
     ///   2. Otherwise, the containing block is formed by the padding edge of the
-    ///      ancestor."
+    ///      ancestor.
+    ///
     /// <https://www.w3.org/TR/CSS2/visudet.html#containing-block-details>
     /// If the ancestor forms a containing block for all descendants (see below),
     /// this value will be None and absolute descendants will use the containing