From 32afb683f269c993a81e69c6e977d6e4c4a9cee4 Mon Sep 17 00:00:00 2001
From: Witold Filipczyk <witekfl@poczta.onet.pl>
Date: Fri, 24 Jun 2022 22:03:07 +0200
Subject: [PATCH] [leds] Check return value of fscanf

---
 src/bfu/leds.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/bfu/leds.c b/src/bfu/leds.c
index 5c08e494..ee09ed25 100644
--- a/src/bfu/leds.c
+++ b/src/bfu/leds.c
@@ -217,6 +217,7 @@ draw_temperature_node(struct session *ses, int xpos, int ypos, unsigned int node
 	struct terminal *term = ses->tab->term;
 	FILE *f;
 	int temp = 0;
+	int ret;
 	struct string text;
 	int i;
 	int length;
@@ -224,9 +225,16 @@ draw_temperature_node(struct session *ses, int xpos, int ypos, unsigned int node
 
 	f = fopen(get_leds_temperature_filename(), "r");
 
-	if (!f) return 0;
-	fscanf(f, "%d", &temp);
+	if (!f) {
+		return 0;
+	}
+	ret = fscanf(f, "%d", &temp);
 	fclose(f);
+
+	if (ret < 1) {
+		return 0;
+	}
+
 	if (!init_string(&text)) {
 		return 0;
 	}