[rtp_rtcp] fixed lint errors in rtp_rtcp module that are not fixed in other CLs

webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.cc

Index: webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.cc b/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.cc
index bdc05c6f7bb47325cb02e321c7182c640dc050b1..fb9b206cd161a45969bde58db358c0f15c89edf4 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_receiver_impl.cc
@@ -170,7 +170,7 @@ bool RtpReceiverImpl::IncomingRtpPacket(
   int8_t first_payload_byte = payload_length > 0 ? payload[0] : 0;
   bool is_red = false;
 
-  if (CheckPayloadChanged(rtp_header, first_payload_byte, is_red,
+  if (CheckPayloadChanged(rtp_header, first_payload_byte, &is_red,
                           &payload_specific) == -1) {
     if (payload_length == 0) {
       // OK, keep-alive packet.
@@ -320,7 +320,7 @@ void RtpReceiverImpl::CheckSSRCChanged(const RTPHeader& rtp_header) {
 // last known payload).
 int32_t RtpReceiverImpl::CheckPayloadChanged(const RTPHeader& rtp_header,
                                              const int8_t first_payload_byte,
-                                             bool& is_red,
+                                             bool* is_red,
                                              PayloadUnion* specific_payload) {
   bool re_initialize_decoder = false;
 
@@ -338,7 +338,7 @@ int32_t RtpReceiverImpl::CheckPayloadChanged(const RTPHeader& rtp_header,
       if (rtp_payload_registry_->red_payload_type() == payload_type) {
         // Get the real codec payload type.
         payload_type = first_payload_byte & 0x7f;
-        is_red = true;
+        *is_red = true;
 
         if (rtp_payload_registry_->red_payload_type() == payload_type) {
           // Invalid payload type, traced by caller. If we proceeded here,
@@ -360,7 +360,7 @@ int32_t RtpReceiverImpl::CheckPayloadChanged(const RTPHeader& rtp_header,
         &should_discard_changes);
 
       if (should_discard_changes) {
-        is_red = false;
+        *is_red = false;
         return 0;
       }
 
@@ -390,7 +390,7 @@ int32_t RtpReceiverImpl::CheckPayloadChanged(const RTPHeader& rtp_header,
       }
     } else {
       rtp_media_receiver_->GetLastMediaSpecificPayload(specific_payload);
-      is_red = false;
+      *is_red = false;
     }
   }  // End critsect.