Bug 1768905 - Lint and 32-bit build fix.

MANUAL PUSH: Bustage fix CLOSED TREE

servo/components/style/lib.rs

@@ -64,6 +64,7 @@ pub use servo_arc;
 #[cfg(feature = "servo")]
 #[macro_use]
 extern crate servo_atoms;
+#[cfg(target_pointer_width = "64")]
 #[macro_use]
 extern crate static_assertions;
 #[macro_use]

tools/lint/clippy.yml

@@ -20,7 +20,6 @@ clippy:
         - servo/components/derive_common/
         - servo/components/selectors/
         - servo/components/servo_arc/
-        - servo/components/size_of_test/
         - servo/components/style/
         - servo/components/style_derive/
         - servo/components/style_traits/