Typo fixes: backslash, join one set of comments.

Typo fixes: backslash, join one set of comments.

The backslash was doing nothing.  Nick said this was ok.

It's confusing having two of those almost-identical comments
indented, and two non-indented.  They all fit within 80 chars.

Relax; I'm not going to go on a stylistic editing spree right
before 2.14.  These are (I think) the only changes I'll be making
on master without more discussion.