From c659c897bcd697a95307406d50564f5eedbe788d Mon Sep 17 00:00:00 2001
From: Rodger Combs <rodger.combs@gmail.com>
Date: Mon, 14 Oct 2019 20:32:33 -0500
Subject: fontselect: leave returned struct in a valid state on error

This fixes a double-free in be0d1613f79a95073d18d96a60e1394abf9316a2
---
 libass/ass_fontselect.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libass/ass_fontselect.c b/libass/ass_fontselect.c
index e9748de..275820b 100644
--- a/libass/ass_fontselect.c
+++ b/libass/ass_fontselect.c
@@ -843,6 +843,9 @@ error:
     free(info->families);
     free(info->fullnames);
 
+    info->families = info->fullnames = NULL;
+    info->n_family = info->n_fullname = 0;
+
     return false;
 }
 
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