Bug 1730397 - Remove unnecessary semi-colons in some macros. r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D125503

servo/components/style/stylesheets/viewport_rule.rs

@@ -752,7 +752,7 @@ impl MaybeNew for ViewportConstraints {
                     })
                 } else {
                     None
-                };
+                }
             };
         }
 

servo/components/style/values/generics/mod.rs

@@ -151,7 +151,7 @@ impl SpecifiedValueInfo for CounterStyle {
         // approach here.
         macro_rules! predefined {
             ($($name:expr,)+) => {
-                f(&["symbols", $($name,)+]);
+                f(&["symbols", $($name,)+])
             }
         }
         include!("../../counter_style/predefined.rs");