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

webrtc/modules/audio_processing/test/test_utils.cc

Index: webrtc/modules/audio_processing/test/test_utils.cc
diff --git a/webrtc/modules/audio_processing/test/test_utils.cc b/webrtc/modules/audio_processing/test/test_utils.cc
index 95490f00a9492a0eb19e667a2da1399d2346b543..24e9b0ebd2c7d78b273450e3467c0a7833e02d7b 100644
--- a/webrtc/modules/audio_processing/test/test_utils.cc
+++ b/webrtc/modules/audio_processing/test/test_utils.cc
@@ -136,7 +136,7 @@ std::vector<Point> ParseArrayGeometry(const std::string& mic_positions) {
   const std::vector<float> values = ParseList<float>(mic_positions);
   const size_t num_mics =
       rtc::CheckedDivExact(values.size(), static_cast<size_t>(3));
-  RTC_CHECK_GT(num_mics, 0u) << "mic_positions is not large enough.";
+  RTC_CHECK_GT(num_mics, 0) << "mic_positions is not large enough.";
 
   std::vector<Point> result;
   result.reserve(num_mics);