[1.4>2.0] [MERGE #2571 @pleath] Fix failure to initialize stack nested func parent pointer.
[1.4>2.0] [MERGE #2571 @pleath] Fix failure to initialize stack nested func parent pointer.

Merge pull request #2571 from pleath:10826279

When a fully compiled function is nested inside a redeferred function, we can quit byte code generation early for the nested function. But don't do so until its stack nested function parent pointer has been initialized (if necessary).

mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore