[MERGE #3920 @meg-gupta] Enable switchopt in presence of try blocks
[MERGE #3920 @meg-gupta] Enable switchopt in presence of try blocks

Merge pull request #3920 from meg-gupta:enableswtchopt

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