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

webrtc/modules/audio_coding/neteq/test/RTPencode.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 1706 matching lines @@
         res = WebRtcIsac_Encode(ISACSWB_inst[k], &indata[noOfCalls * 320],
                                 encoded);
         noOfCalls++;
       }
       cdlen = static_cast<size_t>(res);
     }
 #endif
 #ifdef CODEC_OPUS
     cdlen = WebRtcOpus_Encode(opus_inst[k], indata, frameLen, kRtpDataSize - 12,
                               encoded);
-    RTC_CHECK_GT(cdlen, 0u);
+    RTC_CHECK_GT(cdlen, 0);
 #endif
     indata += frameLen;
     encoded += cdlen;
     totalLen += cdlen;
 
   }  // end for
 
   first_cng = true;
   return (totalLen);
 }
@@ skipping 138 matching lines @@
     memmove(ptrL + stride, ptrL, ptrR - ptrL);
 
     // copy from temp to left pointer
     memcpy(ptrL, temp, stride);
 
     // advance pointers
     ptrL += stride * 2;
     ptrR += stride;
   }
 }