[MERGE #1850 @MikeHolman] ScriptContext close during codegen should not cause failfast
[MERGE #1850 @MikeHolman] ScriptContext close during codegen should not cause failfast

Merge pull request #1850 from MikeHolman:codegenabort

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