patch 9.1.0679: Rename from w_closing to w_locked is incomplete

Problem:  Rename from w_closing to w_locked is incomplete
          (after 9.1.0678).
Solution: Rename remaining occurrences of w_closing to w_locked and
          update comments (zeertzjq).

closes: #15504

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 08b3faf..798e558 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    679,
+/**/
     678,
 /**/
     677,