From 645bf8b3ab9606bff1d94842ea14556c9f1d620a Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Wed, 21 Jun 2023 06:28:18 +0000
Subject: [PATCH] Check fdopen return value, from Christian Menges.

---
 popup.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/popup.c b/popup.c
index 2195adf5..9ab8490f 100644
--- a/popup.c
+++ b/popup.c
@@ -788,6 +788,8 @@ popup_editor(struct client *c, const char *buf, size_t len,
 	if (fd == -1)
 		return (-1);
 	f = fdopen(fd, "w");
+	if (f == NULL)
+		return (-1);
 	if (fwrite(buf, len, 1, f) != 1) {
 		fclose(f);
 		return (-1);