patch 8.2.3241: Vim9: memory leak when function reports an error

Problem:    Vim9: memory leak when function reports an error.
Solution:   Clear the return value.
diff --git a/src/userfunc.c b/src/userfunc.c
index 2adef7c..045692c 100644
--- a/src/userfunc.c
+++ b/src/userfunc.c
@@ -1691,9 +1691,12 @@
 
 	ret = call_func(name, len, rettv, argcount, argvars, funcexe);
 	if (in_vim9script() && did_emsg > did_emsg_before)
+	{
 	    // An error in a builtin function does not return FAIL, but we do
 	    // want to abort further processing if an error was given.
 	    ret = FAIL;
+	    clear_tv(rettv);
+	}
 
 	funcargs.ga_len -= i;
     }
diff --git a/src/version.c b/src/version.c
index 13b6425..897e3fb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3241,
+/**/
     3240,
 /**/
     3239,