FFI APIs: some gardening, GeneralCategoryGroup (#5952)

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CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+- Components
+    - `icu_provider`
+        - `GeneralCategoryGroup::contains` now accepts `self` by value (unicode-org#5952) 
+
 ## icu4x 2.0-beta1
 
 - Components

components/properties/src/props.rs

@@ -527,7 +527,7 @@ impl GeneralCategoryGroup {
     /// assert!(GeneralCategoryGroup::Other.contains(gc.get('\u{E007F}')));
     /// assert!(!GeneralCategoryGroup::Separator.contains(gc.get('\u{E007F}')));
     /// ```
-    pub const fn contains(&self, val: GeneralCategory) -> bool {
+    pub const fn contains(self, val: GeneralCategory) -> bool {
         0 != (1 << (val as u32)) & self.0
     }