Use VAD to get a better speech power estimation in the IntelligibilityEnhancer

R=henrik.lundin@webrtc.org, turaj@webrtc.org

Review URL: https://codereview.webrtc.org/1693823004 .

Cr-Commit-Position: refs/heads/master@{#11713}
diff --git a/webrtc/modules/audio_processing/noise_suppression_impl.cc b/webrtc/modules/audio_processing/noise_suppression_impl.cc
index 076f1ba..7f19005 100644
--- a/webrtc/modules/audio_processing/noise_suppression_impl.cc
+++ b/webrtc/modules/audio_processing/noise_suppression_impl.cc
@@ -182,8 +182,8 @@
   for (auto& suppressor : suppressors_) {
     const float* noise = WebRtcNs_noise_estimate(suppressor->state());
     for (size_t i = 0; i < noise_estimate.size(); ++i) {
-      noise_estimate[i] += kNormalizationFactor *
-          noise[i] / suppressors_.size();
+      noise_estimate[i] +=
+          kNormalizationFactor * noise[i] / suppressors_.size();
     }
   }
 #elif defined(WEBRTC_NS_FIXED)