QueryParser: Don't send notifications if the node's been deleted.

Gets rid of redundant messages under B_QUERY_WATCH_ALL.

headers/private/file_systems/QueryParser.h

@@ -1660,6 +1660,10 @@ Query<QueryPolicy>::_EvaluateLiveUpdate(Entry* entry, Node* node, const char* at
 		// entry was removed
 		opcode = B_ENTRY_REMOVED;
 	} else if ((fFlags & B_QUERY_WATCH_ALL) != 0) {
+		if (QueryPolicy::NodeIsDeleted(node)) {
+			// don't notify
+			return;
+		}
 		// still in query, all attribute changes watched
 		opcode = B_ATTR_CHANGED;
 	} else {

src/add-ons/kernel/file_systems/bfs/Query.cpp

@@ -283,6 +283,11 @@ struct Query::QueryPolicy {
 		return NULL;
 	}
 
+	static bool NodeIsDeleted(Node* node)
+	{
+		return node->IsDeleted();
+	}
+
 	// Volume interface
 
 	static dev_t ContextGetVolumeID(Context* context)

src/add-ons/kernel/file_systems/packagefs/indices/Query.cpp

@@ -220,6 +220,11 @@ struct Query::QueryPolicy {
 		return NULL;
 	}
 
+	static bool NodeIsDeleted(Node* node)
+	{
+		return node->GetParentUnchecked() == NULL;
+	}
+
 	// Volume interface
 
 	static dev_t ContextGetVolumeID(Context* context)

src/add-ons/kernel/file_systems/ramfs/Query.cpp

@@ -276,6 +276,11 @@ struct Query::QueryPolicy {
 		return node->GetNextReferrer(entry);
 	}
 
+	static bool NodeIsDeleted(Node* node)
+	{
+		return node->GetFirstReferrer() == NULL;
+	}
+
 	// Volume interface
 
 	static dev_t ContextGetVolumeID(Context* context)