rc: bluetooth: startup improvements

Fix a redirect of stderr to stdout which is going to /dev/null.
A '&' got missing in the original rewrite from the review that
I took and committed. Seems no one had noticed during testing
or review. People may have ended up with a "/1" file in their
root file system.

Fixes: 40652f86b5ef
Reported by: Vladyslav Movchan (vladislav.movchan gmail.com)
MFX after: 3 days
X-MFC: squash