ARM64: fix in-proc jit memory leak
ARM64: fix in-proc jit memory leak

arm32 has special handling for xdata, but arm64 handles it the same way as amd64. see: https://github.com/Microsoft/ChakraCore/blob/c60cf515ac902af1c0c3d3d4e160c40d09b4659e/lib/Backend/NativeCodeGenerator.cpp#L1119

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