vim-patch:9.0.0965: using one window for executing autocommands is insufficient

Problem:    Using one window for executing autocommands is insufficient.
Solution:   Use up to five windows for executing autocommands.

e76062c078

N/A patches for version.c:

vim-patch:9.0.0966: some compilers don't allow a declaration after a label

Problem:    Some compilers don't allow a declaration after a label.
Solution:   Move the declaration to the start of the block. (John Marriott)

f86490ed4f

Co-authored-by: Bram Moolenaar <Bram@vim.org>

src/nvim/terminal.c

@@ -387,7 +387,7 @@ void terminal_check_size(Terminal *term)
   // Check if there is a window that displays the terminal and find the maximum width and height.
   // Skip the autocommand window which isn't actually displayed.
   FOR_ALL_TAB_WINDOWS(tp, wp) {
-    if (wp == aucmd_win) {
+    if (is_aucmd_win(wp)) {
       continue;
     }
     if (wp->w_buffer && wp->w_buffer->terminal == term) {