patch 8.1.0118: duplicate error message for put command

Problem:    Duplicate error message for put command.
Solution:   Check return value of u_save(). (Jason Franklin)
diff --git a/src/version.c b/src/version.c
index 88a6541..ff3806a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -790,6 +790,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    118,
+/**/
     117,
 /**/
     116,