Crashed on Safari!!!

[zhoubo2015]

Thread 8 Crashed:: Thread 0x0x7fe5b651b4 0 com.xxx.plugin 0x00000001140367cf Utils::NPObjectRelease(NPObject*) + 47 (Utils.cc:25) 1 com.xxx.plugin 0x00000001140076f3 NPObjectAutoRef::~NPObjectAutoRef() + 35 (NPCommon.h:24) 2 com.xxx.plugin 0x00000001140065c5 NPObjectAutoRef::~NPObjectAutoRef() + 21 (NPCommon.h:25) 3 com.xxx.plugin 0x000000011401a345 PeerConnection::Invoke(NPObject, void, _NPVariant const, unsigned int, _NPVariant)::$_12::~$_12() + 21 (PeerConnection.cc:495) 4 com.xxx.plugin 0x0000000114018675 PeerConnection::Invoke(NPObject, void, _NPVariant const, unsigned int, _NPVariant)::$_12::~$_12() + 21 (PeerConnection.cc:495) 5 com.xxx.plugin 0x0000000114021d8f std::tr1::_Function_base::_Base_manager<PeerConnection::Invoke(NPObject, void, _NPVariant const, unsigned int, _NPVariant)::$_12>::_M_destroy(std::tr1::_Any_data&, std::tr1::integral_constant<bool, false>) + 47 (functional:897) 6 com.xxx.plugin 0x0000000114021ab6 std::tr1::_Function_base::_Base_manager<PeerConnection::Invoke(NPObject, void, _NPVariant const, unsigned int, _NPVariant)::$_12>::_M_manager(std::tr1::_Any_data&, std::tr1::_Any_data const&, std::tr1::_Manager_operation) + 150 (functional:919) 7 com.xxx.plugin 0x0000000114007464 std::tr1::_Function_base::~_Function_base() + 52 (functional:1013) 8 com.xxx.plugin 0x0000000114019fc5 std::tr1::function<void (std::tr1::shared_ptr)>::~function() + 21 (functional:834) 9 com.xxx.plugin 0x0000000114017c15 std::tr1::function<void (std::tr1::shared_ptr)>::~function() + 21 (functional:834) 10 com.xxx.plugin 0x000000011408b377 DummyStatsObserver::~DummyStatsObserver() + 87 (_PeerConnection.cc:146) 11 com.xxx.plugin 0x000000011408b3f5 rtc::RefCountedObject::~RefCountedObject() + 21 (refcount.h:122) 12 com.xxx.plugin 0x000000011408a595 rtc::RefCountedObject::~RefCountedObject() + 21 (refcount.h:122) 13 com.xxx.plugin 0x000000011408a5b9 rtc::RefCountedObject::~RefCountedObject() + 25 (refcount.h:121) 14 com.xxx.plugin 0x000000011408a56b rtc::RefCountedObject::Release() + 75 (refcount.h:106) 15 com.xxx.plugin 0x0000000114130d9f rtc::scoped_refptr::~scoped_refptr() + 63 (scoped_ref_ptr.h:94) 16 com.xxx.plugin 0x0000000114130cc3 rtc::scoped_refptr::~scoped_refptr() + 35 (scoped_ref_ptr.h:92) 17 com.xxx.plugin 0x0000000114130c1f (anonymous namespace)::GetStatsMsg::~GetStatsMsg() + 79 (peerconnection.cc:88) 18 com.xxx.plugin 0x0000000114130a63 (anonymous namespace)::GetStatsMsg::~GetStatsMsg() + 35 (peerconnection.cc:88) 19 com.xxx.plugin 0x0000000114130aba (anonymous namespace)::GetStatsMsg::~GetStatsMsg() + 42 (peerconnection.cc:88) 20 com.xxx.plugin 0x0000000114128ce3 webrtc::PeerConnection::OnMessage(rtc::Message) + 451 (peerconnection.cc:792) 21 com.xxx.plugin 0x0000000114128fa2 non-virtual thunk to webrtc::PeerConnection::OnMessage(rtc::Message) + 50 (peerconnection.cc:771) 22 com.xxx.plugin 0x00000001140683b2 rtc::MessageQueue::Dispatch(rtc::Message) + 50 (messagequeue.cc:404) 23 com.xxx.plugin 0x000000011406f033 rtc::Thread::ProcessMessages(int) + 179 (thread.cc:546) 24 com.xxx.plugin 0x000000011406ef6a rtc::Thread::Run() + 26 (thread.cc:377) 25 com.xxx.plugin 0x000000011406ece4 rtc::Thread::PreRun(void*) + 132 (thread.cc:370) 26 libsystem_pthread.dylib 0x00007fffe556babb _pthread_body + 180 27 libsystem_pthread.dylib 0x00007fffe556ba07 _pthread_start + 286 28 libsystem_pthread.dylib 0x00007fffe556b231 thread_start + 13