patch 9.0.1290: CTRL-N and -P on cmdline don't trigger CmdlineChanged

Problem:    CTRL-N and -P on cmdline don't trigger CmdlineChanged.
Solution:   Jump to cmdline_changed instead of cmdline_not_changed.
            (closes #11956)
diff --git a/src/ex_getln.c b/src/ex_getln.c
index 2407bce..6d0b3c5 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -2293,7 +2293,7 @@
 		    wild_type = (c == Ctrl_P) ? WILD_PREV : WILD_NEXT;
 		    if (nextwild(&xpc, wild_type, 0, firstc != '@') == FAIL)
 			break;
-		    goto cmdline_not_changed;
+		    goto cmdline_changed;
 		}
 		// FALLTHROUGH
 	case K_UP:
@@ -2315,7 +2315,7 @@
 			wild_type = WILD_PAGEDOWN;
 		    if (nextwild(&xpc, wild_type, 0, firstc != '@') == FAIL)
 			break;
-		    goto cmdline_not_changed;
+		    goto cmdline_changed;
 		}
 		else
 		{
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index 8931678..c11f6ff 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -1918,6 +1918,41 @@
   au! CmdlineChanged
   cunmap <F1>
 
+  let g:log = []
+  autocmd CmdlineChanged : let g:log += [getcmdline()]
+  call feedkeys(":sign \<Tab>\<Tab>\<C-N>\<C-P>\<S-Tab>\<S-Tab>\<Esc>", 'xt')
+  call assert_equal([
+        \ 's',
+        \ 'si',
+        \ 'sig',
+        \ 'sign',
+        \ 'sign ',
+        \ 'sign define',
+        \ 'sign jump',
+        \ 'sign list',
+        \ 'sign jump',
+        \ 'sign define',
+        \ 'sign ',
+        \ ], g:log)
+  let g:log = []
+  set wildmenu wildoptions+=pum
+  call feedkeys(":sign \<S-Tab>\<PageUp>\<kPageUp>\<kPageDown>\<PageDown>\<Esc>", 'xt')
+  call assert_equal([
+        \ 's',
+        \ 'si',
+        \ 'sig',
+        \ 'sign',
+        \ 'sign ',
+        \ 'sign unplace',
+        \ 'sign jump',
+        \ 'sign define',
+        \ 'sign undefine',
+        \ 'sign unplace',
+        \ ], g:log)
+  set wildmenu& wildoptions&
+  unlet g:log
+  au! CmdlineChanged
+
   au! CmdlineEnter : let g:entered = expand('<afile>')
   au! CmdlineLeave : let g:left = expand('<afile>')
   let g:entered = 0
diff --git a/src/version.c b/src/version.c
index d7b12b1..3523df2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1290,
+/**/
     1289,
 /**/
     1288,