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

webrtc/modules/rtp_rtcp/source/rtp_packet_history.cc

Index: webrtc/modules/rtp_rtcp/source/rtp_packet_history.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_packet_history.cc b/webrtc/modules/rtp_rtcp/source/rtp_packet_history.cc
index 0a152092713a00cd9590bdb16708a8cbce938cb5..c4edc732b8fceb61b16c5323463e672f11593d17 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_packet_history.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_packet_history.cc
@@ -45,7 +45,7 @@ void RtpPacketHistory::SetStorePacketsStatus(bool enable,
 }
 
 void RtpPacketHistory::Allocate(size_t number_to_store) {
-  RTC_DCHECK_GT(number_to_store, 0u);
+  RTC_DCHECK_GT(number_to_store, 0);
   RTC_DCHECK_LE(number_to_store, kMaxCapacity);
   store_ = true;
   stored_packets_.resize(number_to_store);