Fix chromium-style errors in IntelligibilityEnhancer

webrtc/modules/audio_processing/intelligibility/intelligibility_enhancer.h

Index: webrtc/modules/audio_processing/intelligibility/intelligibility_enhancer.h
diff --git a/webrtc/modules/audio_processing/intelligibility/intelligibility_enhancer.h b/webrtc/modules/audio_processing/intelligibility/intelligibility_enhancer.h
index 5cb8dbdde3692d04d8bfcc4c51ae46cbf2badf3c..3af1190cf0c167f0ab53e16e157f6df5ae916fbc 100644
--- a/webrtc/modules/audio_processing/intelligibility/intelligibility_enhancer.h
+++ b/webrtc/modules/audio_processing/intelligibility/intelligibility_enhancer.h
@@ -35,7 +35,7 @@ class IntelligibilityEnhancer : public LappedTransform::Callback {
                           size_t num_render_channels,
                           size_t num_noise_bins);
 
-  ~IntelligibilityEnhancer();
+  ~IntelligibilityEnhancer() override;
 
   // Sets the capture noise magnitude spectrum estimate.
   void SetCaptureNoiseEstimate(std::vector<float> noise, float gain);