Merge from origin/emacs-26

b0da915 (origin/emacs-26, emacs-26) Fix a typo in ELisp manual
400907b Add option to disable help completion autoloading (Bug#28607)
122ba16 Don't segfault on force-window-update of deleted window
015b12e Fix typo in ELisp manual
eadf044 Remove repeated function call in picture.el
1228a90 ; Fix mm-destroy-parts docstring typo
6cfd68d Fix Hideshow key binding typo in Emacs manual

1 files changed, 1 insertions, 1 deletions

diff --git a/src/window.c b/src/window.c
index 30ffad0e513..ca7cf7a4a61 100644
--- a/src/window.c
+++ b/src/window.c
@@ -4089,7 +4089,7 @@ displaying that buffer.  */)
       return Qt;
     }
 
-  if (WINDOWP (object))
+  if (WINDOW_LIVE_P (object))
     {
       struct window *w = XWINDOW (object);
       mark_window_display_accurate (object, false);