From 6dd41b1d575e8859238144899600e3cbb412c79b Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Thu, 24 Dec 2020 16:06:00 +0100
Subject: [PATCH] patch 8.2.2205: Vim9: memory leak when parsing lambda fails

Problem:    Vim9: memory leak when parsing lambda fails.
Solution:   Clear growarrays.
---
 src/userfunc.c | 8 ++++++++
 src/version.c  | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/src/userfunc.c b/src/userfunc.c
index 4da1dc0386..f9f302a170 100644
--- a/src/userfunc.c
+++ b/src/userfunc.c
@@ -523,7 +523,11 @@ get_lambda_tv(
 	    types_optional ? &argtypes : NULL, types_optional,
 						 NULL, NULL, TRUE, NULL, NULL);
     if (ret == FAIL || skip_arrow(s, equal_arrow) == NULL)
+    {
+	if (types_optional)
+	    ga_clear_strings(&argtypes);
 	return NOTDONE;
+    }
 
     // Parse the arguments again.
     if (evaluate)
@@ -535,7 +539,11 @@ get_lambda_tv(
 	    types_optional ? &argtypes : NULL, types_optional,
 					    &varargs, NULL, FALSE, NULL, NULL);
     if (ret == FAIL || (*arg = skip_arrow(*arg, equal_arrow)) == NULL)
+    {
+	if (types_optional)
+	    ga_clear_strings(&argtypes);
 	return NOTDONE;
+    }
 
     // Set up a flag for checking local variables and arguments.
     if (evaluate)
diff --git a/src/version.c b/src/version.c
index df91534a84..5420862e2c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2205,
 /**/
     2204,
 /**/