Fixed busy loop in case of partially malformed rtcp packet

webrtc/modules/rtp_rtcp/source/rtcp_utility.cc

 /*
  *  Copyright (c) 2012 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 212 matching lines @@
             _numberOfBlocks = header.count_or_format;
             ParseIJ();
             return;
         }
         case PT_RTPFB:
           FALLTHROUGH();
         case PT_PSFB:
         {
           if (!ParseFBCommon(header)) {
             // Nothing supported found, continue to next block!
+            EndCurrentBlock();
             break;
           }
           return;
         }
         case PT_APP:
         {
             const bool ok = ParseAPP(header);
             if (!ok)
             {
                 // Nothing supported found, continue to next block!
@@ skipping 1459 matching lines @@
 const RTCPUtility::RtcpCommonHeader*
 RTCPUtility::RTCPPacketIterator::Current() {
     if (!_ptrBlock)
     {
         return NULL;
     }
 
     return &_header;
 }
 }  // namespace webrtc