From d91bc3906f644e289560d7fcdb055e436d76b990 Mon Sep 17 00:00:00 2001
From: Jakub Karolczyk <jakub.karolczyk@signalwire.com>
Date: Fri, 14 Apr 2023 11:55:09 +0100
Subject: [PATCH] [mod_avmd] Coverity CID 1395501 (Dereference null return
 value)

---
 src/mod/applications/mod_avmd/avmd_fast_acosf.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/mod/applications/mod_avmd/avmd_fast_acosf.c b/src/mod/applications/mod_avmd/avmd_fast_acosf.c
index d7ca8683af..22a792f7d6 100644
--- a/src/mod/applications/mod_avmd/avmd_fast_acosf.c
+++ b/src/mod/applications/mod_avmd/avmd_fast_acosf.c
@@ -112,6 +112,10 @@ extern int compute_table(void)
 
 	acos_table_file = fopen(ACOS_TABLE_FILENAME, "w");
 
+	if (!acos_table_file) {
+		return -3;
+	}
+
 	for (i = 0; i < ACOS_TABLE_LENGTH; i++) {
 		f = acosf(float_from_index(i));
 		res = fwrite(&f, sizeof(f), 1, acos_table_file);
@@ -124,10 +128,12 @@ extern int compute_table(void)
 	if (res != 0) {
 		return -2;
 	}
+
 	return 0;
 
 fail:
 	fclose(acos_table_file);
+
 	return -1;
 }