bug#36550: Small bug fix in recentf.el

["Linus Källberg" <linus.kallberg@outlook.com>]

Hello,

In recentf.el (GNU Emacs 26.1 (build 1, x86_64-w64-mingw32) of 
2018-05-30), I made the following small change on line 1187 (in the 
function recentf-open-files-item):

-           :format "%[%t\n%]"
+           :format "%[%t%]\n"

This fixes the highlighting when hovering the mouse over a file in the 
recent files dialog. Before, the file name, as well as the rest of the 
line and the first character on the next line, was highlighted. Now only 
the file name is highlighted, which looks much nicer and is probably 
what is intended.

Yours Sincerely,
Linus Källberg