RTC_[D]CHECK_op: Remove "u" suffix on integer constants

webrtc/modules/audio_processing/low_cut_filter.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 73 matching lines @@
   filters_.resize(channels);
   for (size_t i = 0; i < channels; i++) {
     filters_[i].reset(new BiquadFilter(sample_rate_hz));
   }
 }
 
 LowCutFilter::~LowCutFilter() {}
 
 void LowCutFilter::Process(AudioBuffer* audio) {
   RTC_DCHECK(audio);
-  RTC_DCHECK_GE(160u, audio->num_frames_per_band());
+  RTC_DCHECK_GE(160, audio->num_frames_per_band());
   RTC_DCHECK_EQ(filters_.size(), audio->num_channels());
   for (size_t i = 0; i < filters_.size(); i++) {
     filters_[i]->Process(audio->split_bands(i)[kBand0To8kHz],
                          audio->num_frames_per_band());
   }
 }
 
 }  // namespace webrtc