patch 8.2.2220: Vim9: memory leak when parsing nested parenthesis

Problem:    Vim9: memory leak when parsing nested parenthesis.
Solution:   Clear newargs.
diff --git a/src/version.c b/src/version.c
index 6178cae..63e5bad 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2220,
+/**/
     2219,
 /**/
     2218,