#fixed code
                              @Override
  public void process(Node externs, Node root) {
    CollectTweaksResult result = collectTweaks(root);
    applyCompilerDefaultValueOverrides(result.tweakInfos);

    boolean changed = false;

    if (stripTweaks) {
      changed = stripAllCalls(result.tweakInfos);
    } else if (!compilerDefaultValueOverrides.isEmpty()) {
      changed = replaceGetCompilerOverridesCalls(result.getOverridesCalls);
    }
    if (changed) {
      compiler.reportCodeChange();
    }
  }
#vulnerable code 
                              @Override
  public void process(Node externs, Node root) {
    Map<String, TweakInfo> tweakInfos = collectTweaks(root);
    applyCompilerDefaultValueOverrides(tweakInfos);

    boolean changed = false;

    if (stripTweaks) {
      changed = stripAllCalls(tweakInfos);
    } else if (!compilerDefaultValueOverrides.isEmpty()) {
      // Pass the compiler default value overrides to the JS through a specially
      // named variable.
      Node varNode = createCompilerDefaultValueOverridesVarNode(
          root.getFirstChild());
      root.getFirstChild().addChildToFront(varNode);
      changed = true;
    }
    if (changed) {
      compiler.reportCodeChange();
    }
  } 
                            #location 15 
                            #vulnerability type NULL_DEREFERENCE