FindNodejs.cmake: V8_VERSION_MAJOR is being set and MINOR/PATCH where empty
FindNodejs.cmake: V8_VERSION_MAJOR is being set and MINOR/PATCH where empty

This has been wrong for a while and probably not the most important but when
node.js fails to be detected (typically this means runtime check on node.js has
failed which hopefully is rare!)

Signed-off-by: Brendan Le Foll <3e0e8c4069934e8b47d99704927a85c66c0ceb33@intel.com>

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