From 73e2373af2b042a8cad68422ce914d83d0ba431a Mon Sep 17 00:00:00 2001
From: aluebs <aluebs@webrtc.org>
Date: Thu, 11 Feb 2016 11:02:49 -0800
Subject: [PATCH] Fix negative shift exponent in WPDTree

BUG=webrtc:5510

Review URL: https://codereview.webrtc.org/1685993003

Cr-Commit-Position: refs/heads/master@{#11585}
---
 webrtc/modules/audio_processing/transient/wpd_tree.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/webrtc/modules/audio_processing/transient/wpd_tree.cc b/webrtc/modules/audio_processing/transient/wpd_tree.cc
index 40a37a0286..227b48ade6 100644
--- a/webrtc/modules/audio_processing/transient/wpd_tree.cc
+++ b/webrtc/modules/audio_processing/transient/wpd_tree.cc
@@ -66,10 +66,10 @@ WPDTree::WPDTree(size_t data_length, const float* high_pass_coefficients,
 WPDTree::~WPDTree() {}
 
 WPDNode* WPDTree::NodeAt(int level, int index) {
-  const int kNumNodesAtLevel = 1 << level;
-  if (level < 0 || level > levels_ || index < 0 || index >= kNumNodesAtLevel) {
+  if (level < 0 || level > levels_ || index < 0 || index >= 1 << level) {
     return NULL;
   }
+
   return nodes_[(1 << level) + index].get();
 }