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

webrtc/modules/rtp_rtcp/source/rtcp_packet/bye.cc

 /*
  *  Copyright (c) 2015 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 83 matching lines @@
     *index += sizeof(uint32_t);
   }
   // Store the reason to leave.
   if (!reason_.empty()) {
     uint8_t reason_length = reason_.size();
     packet[(*index)++] = reason_length;
     memcpy(&packet[*index], reason_.data(), reason_length);
     *index += reason_length;
     // Add padding bytes if needed.
     size_t bytes_to_pad = index_end - *index;
-    RTC_DCHECK_LE(bytes_to_pad, 3u);
+    RTC_DCHECK_LE(bytes_to_pad, 3);
     if (bytes_to_pad > 0) {
       memset(&packet[*index], 0, bytes_to_pad);
       *index += bytes_to_pad;
     }
   }
   RTC_DCHECK_EQ(index_end, *index);
   return true;
 }
 
 bool Bye::SetCsrcs(std::vector<uint32_t> csrcs) {
@@ skipping 11 matching lines @@
 }
 
 size_t Bye::BlockLength() const {
   size_t src_count = (1 + csrcs_.size());
   size_t reason_size_in_32bits = reason_.empty() ? 0 : (reason_.size() / 4 + 1);
   return kHeaderLength + 4 * (src_count + reason_size_in_32bits);
 }
 
 }  // namespace rtcp
 }  // namespace webrtc