Remove faulty DCHECK in rtcp::TransportFeedback::ParseFrom

webrtc/modules/rtp_rtcp/source/rtcp_packet/transport_feedback.cc

 /*
  *  Copyright (c) 2015 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 726 matching lines @@
         }
         packet->receive_deltas_.push_back(
             ByteReader<int16_t>::ReadBigEndian(&buffer[index]));
         index += 2;
         break;
       default:
         continue;
     }
   }
 
-  RTC_DCHECK_GE(index, end_index - 3);
   RTC_DCHECK_LE(index, end_index);
 
   return packet;
 }
 
 PacketStatusChunk* TransportFeedback::ParseChunk(const uint8_t* buffer,
                                                  size_t max_size) {
   if (buffer[0] & 0x80) {
     // First bit set => vector chunk.
     std::deque<StatusSymbol> symbols;
@@ skipping 13 matching lines @@
                        "RLE block of size " << rle_chunk->NumSymbols()
                     << " but only " << max_size << " left to read.";
     delete rle_chunk;
     return nullptr;
   }
   return rle_chunk;
 }
 
 }  // namespace rtcp
 }  // namespace webrtc