master updated (fbe026c -> 6a17bb4)

[Stefan Kangas]

skangas pushed a change to branch master.

      from  fbe026c   Acquire draw lock when updating menubar on Haiku
      adds  edb1d49   * lisp/net/shr.el (shr-expand-url): Also strip trailing 
whitespace.
      adds  04be23f   Improve Xref documentation
       new  6a17bb4   Merge from origin/emacs-28


Summary of changes:
 lisp/net/shr.el        |  4 +++-
 lisp/progmodes/xref.el | 16 ++++++++++++++--
 2 files changed, 17 insertions(+), 3 deletions(-)