From fd88e703372eed2ecda8f10fe539ee28b2794e0f Mon Sep 17 00:00:00 2001
From: Tushar Gohad <tusharsg@gmail.com>
Date: Thu, 10 Mar 2016 01:00:40 +0000
Subject: [PATCH] Add NULL instance check to backend_open()

---
 src/erasurecode.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/erasurecode.c b/src/erasurecode.c
index 6528eec..67ca393 100644
--- a/src/erasurecode.c
+++ b/src/erasurecode.c
@@ -170,6 +170,8 @@ static void print_dlerror(const char *caller)
 /* Generic dlopen/dlclose routines */
 void* liberasurecode_backend_open(ec_backend_t instance)
 {
+    if (NULL == instance)
+        return NULL;
     /* Use RTLD_LOCAL to avoid symbol collisions */
     return dlopen(instance->common.soname, RTLD_LAZY | RTLD_LOCAL);
 }