patch 9.0.0492: cmdwin test fails on MS-Windows

Problem:    Cmdwin test fails on MS-Windows.
Solution:   Skip test on MS-Windows.

src/testdir/test_cmdwin.vim

@@ -380,6 +380,9 @@ endfunc
 
 " This was using a pointer to a freed buffer
 func Test_cmdwin_freed_buffer_ptr()
+  " this does not work on MS-Windows because renaming an open file fails
+  CheckNotMSWindows
+
   au BufEnter * next 0| file 
   edit 0
   silent! norm q/

src/version.c

@@ -699,6 +699,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    492,
 /**/
     491,
 /**/