patch 8.2.0089: crash when running out of memory in :setfiletype completion

Problem:    Crash when running out of memory in :setfiletype completion.
Solution:   Do not allocate memory. (Dominique Pelle, closes #5438)
diff --git a/src/version.c b/src/version.c
index c34675f..c82f379 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    89,
+/**/
     88,
 /**/
     87,