Fix the stereo support in IntelligibilityEnhancer

webrtc/modules/audio_processing/intelligibility/intelligibility_utils.cc

Index: webrtc/modules/audio_processing/intelligibility/intelligibility_utils.cc
diff --git a/webrtc/modules/audio_processing/intelligibility/intelligibility_utils.cc b/webrtc/modules/audio_processing/intelligibility/intelligibility_utils.cc
index 6d37199a2c179ffd88d3e01df6784aff2b9b68af..3a9433b47684364f188da877275f548d928b7d80 100644
--- a/webrtc/modules/audio_processing/intelligibility/intelligibility_utils.cc
+++ b/webrtc/modules/audio_processing/intelligibility/intelligibility_utils.cc
@@ -54,13 +54,8 @@ template class PowerEstimator<std::complex<float>>;
 GainApplier::GainApplier(size_t freqs, float relative_change_limit)
     : num_freqs_(freqs),
       relative_change_limit_(relative_change_limit),
-      target_(new float[freqs]()),
-      current_(new float[freqs]()) {
-  for (size_t i = 0; i < freqs; ++i) {
-    target_[i] = 1.f;
-    current_[i] = 1.f;
-  }
-}
+      target_(freqs, 1.f),
+      current_(freqs, 1.f) {}
 
 void GainApplier::Apply(const std::complex<float>* in_block,
                         std::complex<float>* out_block) {