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

webrtc/modules/video_coding/codecs/vp9/vp9_frame_buffer_pool.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 35 matching lines @@
           // |this| will be passed as |user_priv| to VpxGetFrameBuffer.
           this)) {
     // Failed to configure libvpx to use Vp9FrameBufferPool.
     return false;
   }
   return true;
 }
 
 rtc::scoped_refptr<Vp9FrameBufferPool::Vp9FrameBuffer>
 Vp9FrameBufferPool::GetFrameBuffer(size_t min_size) {
-  RTC_DCHECK_GT(min_size, 0u);
+  RTC_DCHECK_GT(min_size, 0);
   rtc::scoped_refptr<Vp9FrameBuffer> available_buffer = nullptr;
   {
     rtc::CritScope cs(&buffers_lock_);
     // Do we have a buffer we can recycle?
     for (const auto& buffer : allocated_buffers_) {
       if (buffer->HasOneRef()) {
         available_buffer = buffer;
         break;
       }
     }
@@ skipping 63 matching lines @@
     buffer->Release();
     // When libvpx fails to decode and you continue to try to decode (and fail)
     // libvpx can for some reason try to release the same buffer multiple times.
     // Setting |priv| to null protects against trying to Release multiple times.
     fb->priv = nullptr;
   }
   return 0;
 }
 
 }  // namespace webrtc