compositor.cache: fix MultiCache::has()

CHANGELOG.md

@@ -34,6 +34,12 @@
 
 ### Bugfixes
 
+#### Clients & Protocols
+
+- `Multicache::has()` now correctly does what is expected of it
+
+#### Backends
+
 - EGLBufferReader now checks if buffers are alive before using them.
 - LibSeat no longer panics on seat disable event.
 

src/wayland/compositor/cache.rs

@@ -176,7 +176,9 @@ impl MultiCache {
 
     /// Check if the container currently contains values for type `T`
     pub fn has<T: Cacheable + Send + 'static>(&self) -> bool {
-        self.caches.iter().any(|c| c.as_any().is::<T>())
+        self.caches
+            .iter()
+            .any(|c| (**c).as_any().is::<RefCell<CachedState<T>>>())
     }
 
     /// Commits the pending state, invoking Cacheable::commit()