Fix build (#5456)

Signed-off-by: Holger Friedrich <mail@holger-friedrich.de>

Author: holgerfriedrich

bundles/org.openhab.core/src/main/java/org/openhab/core/internal/items/MetadataRegistryImpl.java

@@ -134,8 +134,8 @@ public void removeItemMetadata(String itemName) {
     public Metadata add(Metadata element) {
         String namespace = element.getUID().getNamespace();
         Set<MetadataProvider> providers = reservedNamespaces.get(namespace);
-        MetadataProvider managedProvider = (MetadataProvider) getManagedProvider().orElse(null);
-        if (providers == null || providers.isEmpty() || providers.stream().anyMatch(p -> p.equals(managedProvider))) {
+        if (providers == null || providers.isEmpty()
+                || providers.stream().anyMatch(p -> p.equals(getManagedProvider()))) {
             return super.add(element);
         }
         throw new UnsupportedOperationException("Cannot add metadata to '" + namespace + "' namespace");
@@ -145,8 +145,8 @@ public Metadata add(Metadata element) {
     public @Nullable Metadata update(Metadata element) {
         String namespace = element.getUID().getNamespace();
         Set<MetadataProvider> providers = reservedNamespaces.get(namespace);
-        MetadataProvider managedProvider = (MetadataProvider) getManagedProvider().orElse(null);
-        if (providers == null || providers.isEmpty() || providers.stream().anyMatch(p -> p.equals(managedProvider))) {
+        if (providers == null || providers.isEmpty()
+                || providers.stream().anyMatch(p -> p.equals(getManagedProvider()))) {
             return super.update(element);
         }
         throw new UnsupportedOperationException("Cannot update metadata in '" + namespace + "' namespace");
@@ -156,8 +156,8 @@ public Metadata add(Metadata element) {
     public @Nullable Metadata remove(MetadataKey key) {
         String namespace = key.getNamespace();
         Set<MetadataProvider> providers = reservedNamespaces.get(namespace);
-        MetadataProvider managedProvider = (MetadataProvider) getManagedProvider().orElse(null);
-        if (providers == null || providers.isEmpty() || providers.stream().anyMatch(p -> p.equals(managedProvider))) {
+        if (providers == null || providers.isEmpty()
+                || providers.stream().anyMatch(p -> p.equals(getManagedProvider()))) {
             return super.remove(key);
         }
         throw new UnsupportedOperationException("Cannot remove metadata from '" + namespace + "' namespace");