modules/rtp_rtcp/include folder cleared of lint warnings

webrtc/modules/rtp_rtcp/source/rtp_payload_registry.cc

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 325 matching lines @@
   // Check that this is a registered payload type.
   if (it == payload_type_map_.end()) {
     return false;
   }
   *payload = it->second->typeSpecific;
   return true;
 }
 
 int RTPPayloadRegistry::GetPayloadTypeFrequency(
     uint8_t payload_type) const {
-  RtpUtility::Payload* payload;
-  if (!PayloadTypeToPayload(payload_type, payload)) {
+  const RtpUtility::Payload* payload = PayloadTypeToPayload(payload_type);
+  if (!payload) {
     return -1;
   }
   CriticalSectionScoped cs(crit_sect_.get());
   return rtp_payload_strategy_->GetPayloadTypeFrequency(*payload);
 }
 
-bool RTPPayloadRegistry::PayloadTypeToPayload(
-    const uint8_t payload_type,
-    RtpUtility::Payload*& payload) const {
+const RtpUtility::Payload* RTPPayloadRegistry::PayloadTypeToPayload(
+    uint8_t payload_type) const {
   CriticalSectionScoped cs(crit_sect_.get());
 
   RtpUtility::PayloadTypeMap::const_iterator it =
       payload_type_map_.find(payload_type);
 
   // Check that this is a registered payload type.
   if (it == payload_type_map_.end()) {
-    return false;
+    return nullptr;
   }
 
-  payload = it->second;
-  return true;
+  return it->second;
 }
 
 void RTPPayloadRegistry::SetIncomingPayloadType(const RTPHeader& header) {
   CriticalSectionScoped cs(crit_sect_.get());
   if (!IsRtxInternal(header))
     incoming_payload_type_ = header.payloadType;
 }
 
 bool RTPPayloadRegistry::ReportMediaPayloadType(uint8_t media_payload_type) {
   CriticalSectionScoped cs(crit_sect_.get());
@@ skipping 104 matching lines @@
 RTPPayloadStrategy* RTPPayloadStrategy::CreateStrategy(
     const bool handling_audio) {
   if (handling_audio) {
     return new RTPPayloadAudioStrategy();
   } else {
     return new RTPPayloadVideoStrategy();
   }
 }
 
 }  // namespace webrtc