Remove unused mut.

src/servo/dom/bindings/utils.rs

@@ -608,8 +608,8 @@ pub fn WrapNewBindingObject(cx: *JSContext, scope: *JSObject,
                             mut value: @mut CacheableWrapper,
                             vp: *mut JSVal) -> bool {
   unsafe {
-    let mut cache = value.get_wrappercache();
-    let mut obj = cache.get_wrapper();
+    let cache = value.get_wrappercache();
+    let obj = cache.get_wrapper();
     if obj.is_not_null() /*&& js::GetObjectCompartment(obj) == js::GetObjectCompartment(scope)*/ {
         *vp = RUST_OBJECT_TO_JSVAL(obj);
         return true;

src/servo/layout/block.rs

@@ -65,14 +65,12 @@ impl BlockLayout for FlowContext {
     fn with_block_box(&self, callback: &fn(box: RenderBox) -> ()) -> () {
         match *self {
             BlockFlow(*) => {
-                let box = self.block().box;
-                for box.each |&b| {
+                for self.block().box.each |&b| {
                     callback(b);
                 }
             },                
             RootFlow(*) => {
-                let mut box = self.root().box;
-                for box.each |&b| {
+                for self.root().box.each |&b| {
                     callback(b);
                 }
             },