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

webrtc/common_audio/wav_file.cc

Index: webrtc/common_audio/wav_file.cc
diff --git a/webrtc/common_audio/wav_file.cc b/webrtc/common_audio/wav_file.cc
index 572c94ba3d25480ca9f186f013705d1942b68bac..2b9098a6cddd153741b7f1e4f6b82c50e4a69010 100644
--- a/webrtc/common_audio/wav_file.cc
+++ b/webrtc/common_audio/wav_file.cc
@@ -123,7 +123,7 @@ WavWriter::WavWriter(const std::string& filename, int sample_rate,
   // Write a blank placeholder header, since we need to know the total number
   // of samples before we can fill in the real data.
   static const uint8_t blank_header[kWavHeaderSize] = {0};
-  RTC_CHECK_EQ(1u, fwrite(blank_header, kWavHeaderSize, 1, file_handle_));
+  RTC_CHECK_EQ(1, fwrite(blank_header, kWavHeaderSize, 1, file_handle_));
 }
 
 WavWriter::~WavWriter() {
@@ -168,7 +168,7 @@ void WavWriter::Close() {
   uint8_t header[kWavHeaderSize];
   WriteWavHeader(header, num_channels_, sample_rate_, kWavFormat,
                  kBytesPerSample, num_samples_);
-  RTC_CHECK_EQ(1u, fwrite(header, kWavHeaderSize, 1, file_handle_));
+  RTC_CHECK_EQ(1, fwrite(header, kWavHeaderSize, 1, file_handle_));
   RTC_CHECK_EQ(0, fclose(file_handle_));
   file_handle_ = NULL;
 }