Ensure Lucene ticket index is updated on repository deletion

releases.moxie

     html: ~
     text: ~
     security: ~
-    fixes: ~
+    fixes:
+    - Ensure the Lucene ticket index is updated on repository deletion.
     changes: ~
     additions: ~
     dependencyChanges: ~

src/main/java/com/gitblit/GitBlit.java

 	@Override
 	public boolean deleteRepository(String repositoryName) {
 		RepositoryModel repository = repositoryManager.getRepositoryModel(repositoryName);
-		boolean success = repositoryManager.deleteRepository(repositoryName);
+		return deleteRepositoryModel(repository);
+	}
+
+	@Override
+	public boolean deleteRepositoryModel(RepositoryModel model) {
+		boolean success = repositoryManager.deleteRepositoryModel(model);
 		if (success && ticketService != null) {
-			return ticketService.deleteAll(repository);
+			return ticketService.deleteAll(model);
 		}
 		return success;
 	}