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)
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)