iOSxlog 异步加密后，解密失败，同步加密没有问题

[caichenlong1102]

同步加密，同步、异步压缩都没问题

Traceback (most recent call last):
File "decode_mars_crypt_log_file.py", line 155, in DecodeBuffer
tea_key = svr.get_ecdh_key(client.get_pubkey())
File "build/bdist.macosx-13.6-x86_64/egg/pyelliptic/ecc.py", line 271, in get_ecdh_key
return self.raw_get_ecdh_key(pubkey_x, pubkey_y)
File "build/bdist.macosx-13.6-x86_64/egg/pyelliptic/ecc.py", line 328, in raw_get_ecdh_key
OpenSSL.EC_KEY_free(own_key)
UnboundLocalError: local variable 'own_key' referenced before assignment