style: Fix servo build.

components/style/properties/properties.mako.rs

@@ -2591,6 +2591,7 @@ pub mod style_structs {
                     /// Whether the border-${side} property has nonzero width.
                     #[allow(non_snake_case)]
                     pub fn border_${side}_has_nonzero_width(&self) -> bool {
+                        use crate::Zero;
                         !self.border_${side}_width.is_zero()
                     }
                 % endfor
@@ -2630,6 +2631,7 @@ pub mod style_structs {
                 /// Whether the outline-width property is non-zero.
                 #[inline]
                 pub fn outline_has_nonzero_width(&self) -> bool {
+                    use crate::Zero;
                     !self.outline_width.is_zero()
                 }
             % elif style_struct.name == "Text":
@@ -2724,11 +2726,7 @@ pub mod style_structs {
             /// Whether this is a multicol style.
             #[cfg(feature = "servo")]
             pub fn is_multicol(&self) -> bool {
-                use crate::values::Either;
+                !self.column_width.is_auto() || !self.column_count.is_auto()
-                match self.column_width {
-                    Either::First(_width) => true,
-                    Either::Second(_auto) => !self.column_count.is_auto(),
-                }
             }
         % endif
     }

components/style/values/computed/text.rs

@@ -38,7 +38,7 @@ pub type InitialLetter = GenericInitialLetter<CSSFloat, CSSInteger>;
     ToAnimatedValue,
     ToAnimatedZero,
 )]
-pub struct LetterSpacing(Length);
+pub struct LetterSpacing(pub Length);
 
 impl LetterSpacing {
     /// Return the `normal` computed value, which is just zero.

components/style/values/specified/text.rs

@@ -836,6 +836,7 @@ pub enum WordBreak {
     ///
     /// Specifying `word-break: break-word` makes `overflow-wrap` behave as
     /// `anywhere`, and `word-break` behave like `normal`.
+    #[cfg(feature = "gecko")]
     BreakWord,
 }