repl: don't crash if cannot open history file

Previously, if we are unable to open the history file, an error would
be thrown. Now, print an error message that we could not open
the history file, but don't fail.

Fixes: https://github.com/nodejs/node/issues/3610
PR-URL: https://github.com/nodejs/node/pull/3630


Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>