Repository: opencv
Issue: python GpuMat from BufferPool works abnormally after release
Labels: bug,category: python bindings,category: gpu/cuda (contrib)

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##### System information (version)
<!-- Example
- OpenCV => 4.2
- Operating System / Platform => Windows 64 Bit
- Compiler => Visual Studio 2017
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- OpenCV =>  4.5.5
- Operating System / Platform => Windows 10
- Compiler => visual Studio 2017

##### Detailed description

<!-- your description -->

I create a GpuMat from bufferPool in the python Local scope. when leave the Local scope,the GpuMat should be release.
In the following code. `print("run")` is not running. The process finished at `test()`  with  `Process finished with exit code -1073740791 (0xC0000409)`
```python
import cv2
cv2.cuda.setBufferPoolUsage(True)
cv2.cuda.setBufferPoolConfig(cv2.cuda.getDevice(), 1024 * 1024 * 128, 1)


def test():
    stream = cv2.cuda.Stream()
    pool = cv2.cuda.BufferPool(stream)

    print("=======start=======")
    mat = pool.getBuffer(1024, 1024, cv2.CV_8UC3)
    print("=======end=========")

    return None


test()
print("run") 
```

When I release the `GpuMat` by `del`, the procsee is normal operation
```python
import cv2
cv2.cuda.setBufferPoolUsage(True)
cv2.cuda.setBufferPoolConfig(cv2.cuda.getDevice(), 1024 * 1024 * 128, 1)


def test():
    stream = cv2.cuda.Stream()
    pool = cv2.cuda.BufferPool(stream)

    print("=======start=======")
    mat = pool.getBuffer(1024, 1024, cv2.CV_8UC3)
    print("=======end=========")
    del mat
    return None


test()
print("run") 
```

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