Merge pull request #17028 from xipingyan:patch-1
Xiping Yan authored
* Update OpenCVFindVA_INTEL.cmake

When set env VA_INTEL_IOCL_ROOT, "if($ENV{VA_INTEL_IOCL_ROOT})" don't work.
    My modification as follow.
    
    -    if($ENV{VA_INTEL_IOCL_ROOT})
    +    if(DEFINED ENV{VA_INTEL_IOCL_ROOT})
    
    Refer: https://cmake.org/cmake/help/latest/variable/ENV.html

* based on merge comment, update code
5c7c80dd

OpenCV: Open Source Computer Vision Library

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