common.js needs to be loaded in all tests so that there is checking
for variable leaks and possibly other things. However, it does not
need to be assigned to a variable if nothing in common.js is referred
to elsewhere in the test.
PR-URL: https://github.com/nodejs/node/pull/4408
Reviewed-By: James M Snell <jasnell@gmail.com>
Attempting to check IsAlive() on a JSStream before the isAlive()
callback can be set in JS causes a CHECK to fail in MakeCallback.
Instead return false if the callback hasn't been set.
PR-URL: https://github.com/nodejs/node/pull/3282
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>