Fix places that trigger no-unused-lambda-capture - change to using static-constexpr

webrtc/modules/audio_processing/aec3/residual_echo_estimator.cc

Index: webrtc/modules/audio_processing/aec3/residual_echo_estimator.cc
diff --git a/webrtc/modules/audio_processing/aec3/residual_echo_estimator.cc b/webrtc/modules/audio_processing/aec3/residual_echo_estimator.cc
index 8905846743399eddd4a4b89628e32dd0a6308ee2..c708664db498b847ede27c4f1791a6a851f41d2b 100644
--- a/webrtc/modules/audio_processing/aec3/residual_echo_estimator.cc
+++ b/webrtc/modules/audio_processing/aec3/residual_echo_estimator.cc
@@ -32,8 +32,8 @@ void EchoGeneratingPower(const RenderBuffer& render_buffer,
   }
 
   // Apply soft noise gate of -78 dBFS.
-  const float kNoiseGatePower = 27509.42f;
-  std::for_each(X2->begin(), X2->end(), [kNoiseGatePower](float& a) {
+  static constexpr float kNoiseGatePower = 27509.42f;
+  std::for_each(X2->begin(), X2->end(), [](float& a) {
     if (kNoiseGatePower > a) {
       a = std::max(0.f, a - 0.3f * (kNoiseGatePower - a));
     }