patch 8.2.2661: leaking memory when looping over a string

Problem:    Leaking memory when looping over a string.
Solution:   Free the memory.
diff --git a/src/version.c b/src/version.c
index f172437..5596bbb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2661,
+/**/
     2660,
 /**/
     2659,