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

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

Index: webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng.cc
diff --git a/webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng.cc b/webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng.cc
index d2edcb5c26557baa12832264152b56f5cb4e6547..b1629410fc545a351fc4e34e833bc12555d1b1de 100644
--- a/webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng.cc
+++ b/webrtc/modules/audio_coding/codecs/cng/audio_encoder_cng.cc
@@ -240,9 +240,9 @@ AudioEncoder::EncodedInfo AudioEncoderCng::EncodeActive(
                                     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.";
     }
   }