patch 8.0.1334: splitting a window with a WinBar damages window layout

Problem:    Splitting a window with a WinBar damages window layout.
            (Lifepillar)
Solution:   Take the winbar into account when computing the new window
            position.  Add WINBAR_HEIGHT().
diff --git a/src/version.c b/src/version.c
index dc29e3d..408b85c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1334,
+/**/
     1333,
 /**/
     1332,