message: refactor(css/prefixer): Use `eq_ignore_span`
diff: @@ -1115,7 +1115,7 @@ impl VisitMut for Prefixer {
  "-moz-placeholder",
  );
  - if new_moz_prelude_with_previous != new_moz_prelude {
  + if !new_moz_prelude_with_previous.eq_ignore_span(&new_moz_prelude) {
  let qualified_rule = Box::new(QualifiedRule {
  span: DUMMY_SP,
  prelude: new_moz_prelude_with_previous,
  @@ -1201,7 +1201,7 @@ impl VisitMut for Prefixer {
  "-ms-input-placeholder",
  );
  - if new_ms_prelude_with_previous != new_ms_prelude {
  + if !new_ms_prelude_with_previous.eq_ignore_span(&new_ms_prelude) {
  let qualified_rule = Box::new(QualifiedRule {
  span: DUMMY_SP,
  prelude: new_ms_prelude_with_previous,
  @@ -1805,7 +1805,7 @@ impl VisitMut for Prefixer {
  );
  }
  - if n.value != old_spec_webkit_value {
  + if !n.value.eq_ignore_span(&old_spec_webkit_value) {
  self.added_declarations.push(Box::new(Declaration {
  span: n.span,
  name: n.name.clone(),
  @@ -2458,7 +2458,7 @@ impl VisitMut for Prefixer {
  replace_ident(&mut old_spec_ms_value, "pixelated", "nearest-neighbor");
  - if ms_value != old_spec_ms_value {
  + if !ms_value.eq_ignore_span(&old_spec_ms_value) {
  add_declaration!(
  Prefix::Ms,
  "-ms-interpolation-mode",
  @@ -3356,7 +3356,7 @@ impl VisitMut for Prefixer {
  _ => {}
  }
  - if n.value != webkit_value {
  + if !n.value.eq_ignore_span(&webkit_value) {
  self.added_declarations.push(Box::new(Declaration {
  span: n.span,
  name: n.name.clone(),
  @@ -3365,7 +3365,7 @@ impl VisitMut for Prefixer {
  }));
  }
  - if n.value != moz_value {
  + if !n.value.eq_ignore_span(&moz_value) {
  self.added_declarations.push(Box::new(Declaration {
  span: n.span,
  name: n.name.clone(),
  @@ -3374,7 +3374,7 @@ impl VisitMut for Prefixer {
  }));
  }
  - if n.value != o_value {
  + if !n.value.eq_ignore_span(&o_value) {
  self.added_declarations.push(Box::new(Declaration {
  span: n.span,
  name: n.name.clone(),
  @@ -3383,7 +3383,7 @@ impl VisitMut for Prefixer {
  }));
  }
  - if n.value != ms_value {
  + if !n.value.eq_ignore_span(&ms_value) {
  self.added_declarations.push(Box::new(Declaration {
  span: n.span,
  name: n.name.clone(),
  