patch 9.1.0475: cmod_split modifier is always reset in term_start()

Problem:  cmod_split modifier is always reset in term_start()
Solution: only clear the WSP_VERT flag, if it is not already in
          cmdmod.cmod_split (Yegappan Lakshmanan)

closes: #14961

Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index fc4490d..8d8e7f5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    475,
+/**/
     474,
 /**/
     473,