patch 8.2.2841: MS-Windows: cursor wrong when 'lz' and 'stl' are set

Problem:    MS-Windows: cursor in wrong position when 'lazyredraw' and
            'statusline' are set.
Solution:   Call compute_cmdrow(). (closes #8170, closes #8184)
diff --git a/src/os_win32.c b/src/os_win32.c
index 3bfeee6..a743e71 100644
--- a/src/os_win32.c
+++ b/src/os_win32.c
@@ -1656,10 +1656,10 @@
 	    {
 		if (csbi.dwCursorPosition.Y != msg_row)
 		{
-		    // The screen is now messed up, must redraw the
-		    // command line and later all the windows.
+		    // The screen is now messed up, must redraw the command
+		    // line and later all the windows.
 		    redraw_all_later(CLEAR);
-		    cmdline_row -= (msg_row - csbi.dwCursorPosition.Y);
+		    compute_cmdrow();
 		    redrawcmd();
 		}
 	    }