Disposing the isolate that is entered by a thread

如图，如果把花括号注释掉，运行会报错：
Fatal error in v8::Isolate::Dispose() Disposing the isolate that is entered by a thread.

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企业微信截图_17271687875695.png
原因和作用域有关，看下图：
v8::Isolate::Scope
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void Isolate::Enter

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Isolate::Dispose
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Fatal signal 4 (SIGILL), code 2 (ILL_ILLOPN), fault addr 0x7472705dfd00 in tid xxx

如图，函数定义了返回值类型void*，但是没有返回值，导致报错：
Fatal signal 4 (SIGILL), code 2 (ILL_ILLOPN), fault addr 0x7472705dfd00 in tid xxx

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