patch 8.1.2349: :lockvar and :unlockvar cannot be followed by "| endif"

Problem:    :lockvar and :unlockvar cannot be followed by "| endif".
Solution:   Check for following commands. (closes #5269)
diff --git a/src/version.c b/src/version.c
index 70df145..36e43a8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -738,6 +738,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2349,
+/**/
     2348,
 /**/
     2347,