[1.3>master] [MERGE #1522 @rajatd] Fixing a bug with FreeLoopBodyJobManager
[1.3>master] [MERGE #1522 @rajatd] Fixing a bug with FreeLoopBodyJobManager

Merge pull request #1522 from rajatd:freeLoopBodyJobBug

Need to reset FreeLoopBodyJobManager::waitingForStackJob when stack job is processed.

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