patch 8.2.2866: Vim9: memory leak when using inline function

Problem:    Vim9: memory leak when using inline function.
Solution:   Remember what strings to free.
diff --git a/src/version.c b/src/version.c
index 5e2a52c..88dd5d6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2866,
+/**/
     2865,
 /**/
     2864,