[rtp_rtcp] Lint errors cleaned from rtp_utility

webrtc/test/rtp_file_reader_unittest.cc

Index: webrtc/test/rtp_file_reader_unittest.cc
diff --git a/webrtc/test/rtp_file_reader_unittest.cc b/webrtc/test/rtp_file_reader_unittest.cc
index 929813f999a05334ea801e8e99c43c768515576b..15a456ccf619f469439e97089d49e91500eb322c 100644
--- a/webrtc/test/rtp_file_reader_unittest.cc
+++ b/webrtc/test/rtp_file_reader_unittest.cc
@@ -85,7 +85,8 @@ class TestPcapFileReader : public ::testing::Test {
     while (rtp_packet_source_->NextPacket(&packet)) {
       RtpUtility::RtpHeaderParser rtp_header_parser(packet.data, packet.length);
       webrtc::RTPHeader header;
-      if (!rtp_header_parser.RTCP() && rtp_header_parser.Parse(header, NULL)) {
+      if (!rtp_header_parser.RTCP() &&
+          rtp_header_parser.Parse(&header, nullptr)) {
         pps[header.ssrc]++;
       }
     }