patch 8.2.4180: 'balloonexpr' is evaluated in the current script context

Problem:    'balloonexpr' is evaluated in the current script context.
Solution:   Use the script context where the option was set.
diff --git a/src/version.c b/src/version.c
index 86eb140..88d32ff 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4180,
+/**/
     4179,
 /**/
     4178,