patch 8.0.1115: crash when using foldtextresult() recursively

Problem:    Crash when using foldtextresult() recursively.
Solution:   Avoid recursive calls. (Yasuhiro Matsumoto, closes #2098)
diff --git a/src/version.c b/src/version.c
index 90aa45c..8b777e7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1115,
+/**/
     1114,
 /**/
     1113,