d3d11videosink: Fix tearing in case of fullscreen mode
DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING and DXGI_PRESENT_ALLOW_TEARING should be used only if required, when user wants Vsync off for example.
Fixes: #2376 (closed)
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DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING and DXGI_PRESENT_ALLOW_TEARING should be used only if required, when user wants Vsync off for example.
Fixes: #2376 (closed)