p2p: android client will lead crash when call p2p.getStats() in debug version

[zhangyihui1]

1: android device1 connect server with 21 ,and device2 connect server with 14 2: android device1 and device2 addRemoteId each other 3: android device1 publish localStream to device2 4: android device2 publish localStream to device1

except: device1 and device2 remoteStream work will

actual: device1 sample will lead crash for a moment later

device1 log: p2p_android.log