patch 8.1.0127: build failure when disabling the session feature

Problem:    Build failure when disabling the session feature. (Pawel Slowik)
Solution:   Adjust #ifdef for vim_chdirfile().
diff --git a/src/version.c b/src/version.c
index 4e3770e..72e8547 100644
--- a/src/version.c
+++ b/src/version.c
@@ -790,6 +790,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    127,
+/**/
     126,
 /**/
     125,