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

webrtc/modules/audio_coding/neteq/delay_peak_detector.cc

Index: webrtc/modules/audio_coding/neteq/delay_peak_detector.cc
diff --git a/webrtc/modules/audio_coding/neteq/delay_peak_detector.cc b/webrtc/modules/audio_coding/neteq/delay_peak_detector.cc
index 10535e23f53c816c987b2b60280cf5a7113b87bc..5763572bade2adcd68c03575feb6295e90d3c932 100644
--- a/webrtc/modules/audio_coding/neteq/delay_peak_detector.cc
+++ b/webrtc/modules/audio_coding/neteq/delay_peak_detector.cc
@@ -66,7 +66,7 @@ uint64_t DelayPeakDetector::MaxPeakPeriod() const {
   if (max_period_element == peak_history_.end()) {
     return 0;  // |peak_history_| is empty.
   }
-  RTC_DCHECK_GT(max_period_element->period_ms, 0u);
+  RTC_DCHECK_GT(max_period_element->period_ms, 0);
   return max_period_element->period_ms;
 }