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

webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng.cc

 /*
  *  Copyright (c) 2014 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 222 matching lines @@
   const size_t samples_per_10ms_frame = SamplesPer10msFrame();
   AudioEncoder::EncodedInfo info;
   for (size_t i = 0; i < frames_to_encode; ++i) {
     info =
         speech_encoder_->Encode(rtp_timestamps_.front(),
                                 rtc::ArrayView<const int16_t>(
                                     &speech_buffer_[i * samples_per_10ms_frame],
                                     samples_per_10ms_frame),
                                 encoded);
     if (i + 1 == frames_to_encode) {
-      RTC_CHECK_GT(info.encoded_bytes, 0u) << "Encoder didn't deliver data.";
+      RTC_CHECK_GT(info.encoded_bytes, 0) << "Encoder didn't deliver data.";
     } else {
-      RTC_CHECK_EQ(info.encoded_bytes, 0u)
+      RTC_CHECK_EQ(info.encoded_bytes, 0)
           << "Encoder delivered data too early.";
     }
   }
   return info;
 }
 
 size_t AudioEncoderCng::SamplesPer10msFrame() const {
   return rtc::CheckedDivExact(10 * SampleRateHz(), 1000);
 }
 
 }  // namespace webrtc