From 4b9fdc6b971408b6841e4c0b249175fe9e07f24f Mon Sep 17 00:00:00 2001
From: Gabriele Gristina <gabriele.gristina@gmail.com>
Date: Mon, 1 Jul 2019 17:57:44 +0200
Subject: [PATCH] try remove warning about unused return value of read

---
 src/shared.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/shared.c b/src/shared.c
index 7ff8718e5..fcc79bc15 100644
--- a/src/shared.c
+++ b/src/shared.c
@@ -665,9 +665,10 @@ bool hc_fopen (HCFILE *fp, const char *path, char *mode)
   {
     lseek (fd_tmp, 0, SEEK_SET);
 
-    read (fd_tmp, check, sizeof(check));
-
-    if (check[0] == 0x1f && check[1] == 0x8b && check[2] == 0x08) fp->is_gzip = true;
+    if (read (fd_tmp, check, sizeof(check)) > 0)
+    {
+      if (check[0] == 0x1f && check[1] == 0x8b && check[2] == 0x08) fp->is_gzip = true;
+    }
 
     close (fd_tmp);
   }