TizenRendererEvasGL::DestroySurface raises SIGSEGV on app exit

[swift-kim]

How to reproduce:

1. Launch any app on a watch device or emulator (I used the video_player example).
2. Press the back button to exit the app.
3. The process crashes with SIGSEGV and a crash dump is generated.

* thread #1, name = 'Runner.dll', stop reason = signal SIGSEGV: invalid address (fault address: 0xffffffff80000000)
  * frame #0: 0x80000000
    frame #1: 0xec3d8ff4 libevas.so.1`evas_gl_surface_destroy + 40
    frame #2: 0xe4e86200 libflutter_tizen.so`flutter::TizenRendererEvasGL::~TizenRendererEvasGL() + 20
    frame #3: 0xe4e86252 libflutter_tizen.so`flutter::TizenRendererEvasGL::~TizenRendererEvasGL() + 6
    frame #4: 0xe4e80062 libflutter_tizen.so`flutter::FlutterTizenEngine::~FlutterTizenEngine() + 130
    frame #5: 0xe4e80266 libflutter_tizen.so`flutter::FlutterTizenEngine::~FlutterTizenEngine() + 6
    frame #6: 0xe4e81dfc libflutter_tizen.so`flutter::FlutterTizenView::~FlutterTizenView() + 132
    frame #7: 0xe4e81e0a libflutter_tizen.so`flutter::FlutterTizenView::~FlutterTizenView() + 6
    frame #8: 0xe5f58d30

[swift-kim]

Fixed?