patch 9.0.0875: using freed memory when executing delfunc at more prompt

Problem:    Using freed memory when executing delfunc at the more prompt.
Solution:   Check function list not changed in another place. (closes #11437)
diff --git a/src/version.c b/src/version.c
index c6e074a..9a459ea 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    875,
+/**/
     874,
 /**/
     873,