Page numbers are shoved into margin in TOC

[Arash Esbati]

Dear all,

I built the latest documentation of AUCTeX with pdfTeX and one thing
occurred to me: For long section entries, page numbers are shoved into
margin instead of getting into the next line.  It worked for an older
version of the file.  Please compare the entry "1.3.2.1 One Command for
LaTeX, helpers, viewers, and printing" on page 3 here (good)

    https://ftp.gnu.org/pub/gnu/auctex/11.88-extra/auctex.pdf

and here (less good)

    https://ftp.gnu.org/pub/gnu/auctex/11.90-extra/auctex.pdf

I compiled auctex.texi with both

    \def\texinfoversion{2016-08-16.19} and
    \def\texinfoversion{2016-09-18.18}

but no avail.

Best, Arash