use project from method parameter in ProjectFilesScope to avoid NPE while batch code analysis (IDEA-184819)

platform/analysis-api/src/com/intellij/psi/search/scope/ProjectFilesScope.java

@@ -1,17 +1,5 @@
 /*
- * Copyright 2000-2010 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
 package com.intellij.psi.search.scope;
 
@@ -41,7 +29,7 @@ public class ProjectFilesScope extends NamedScope {
       public boolean contains(VirtualFile file, @NotNull Project project, @Nullable NamedScopesHolder holder) {
         if (file == null) return false;
         final ProjectFileIndex fileIndex = ProjectRootManager.getInstance(project).getFileIndex();
-        return holder.getProject().isInitialized()
+        return project.isInitialized()
                && !fileIndex.isExcluded(file)
                && fileIndex.getContentRootForFile(file) != null;
       }