process.exitCode in 'exit' event callback

[rlidwka]

Doesn't work if node.js is exitting naturally:

$ node -e 'process.exitCode = 2' ; echo $?
2

$ node -e 'process.on("exit", function(){process.exitCode = 2});process.exit()' ; echo $?
2

$ node -e 'process.on("exit", function(){process.exitCode = 2})' ; echo $?
0

Affects only 0.11.x, since 0.10.x don't have that feature.

[indutny]

Should be fixed by #7083, thanks for reporting!