src: verify pointer before calling its method #2
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The destructor InstanceMethodCallBaton() calls m_javaObject->Unref() which aborts when m_javaObject is NULL. Affects at least `npm test` from `node-jdbc` npm, which aborts in test `testcreatetable`: (abort) [0x26C7C640] (__cxa_end_catch) [0x2E2CC414] (InstanceMethodCallBaton::~InstanceMethodCallBaton()+0x140) [0x2E2CD2A4] (Nan::AsyncWorker::Destroy()@AF61_58+0x28) [0x2E2CCE4C] (Nan::AsyncWorker::Destroy()+0x18) [0x2E2C9F12] (Nan::AsyncExecuteComplete(uv_work_s*)+0x4e) [0x27DB5430] ...
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The destructor InstanceMethodCallBaton() calls m_javaObject->Unref() which aborts when m_javaObject is NULL.
Affects at least
npm testfromnode-jdbcnpm, which aborts in testtest-statement-adjust / testcreatetable:(abort) [0x26C7C640]
(__cxa_end_catch) [0x2E2CC414]
(InstanceMethodCallBaton::~InstanceMethodCallBaton()+0x140) [0x2E2CD2A4]
(Nan::AsyncWorker::Destroy()@AF61_58+0x28) [0x2E2CCE4C]
(Nan::AsyncWorker::Destroy()+0x18) [0x2E2C9F12]
(Nan::AsyncExecuteComplete(uv_work_s*)+0x4e) [0x27DB5430]
...