From 803ef7dad548b1b84c86365d6b61c8b6b4a0cce0 Mon Sep 17 00:00:00 2001
From: Aaron O'Mullan <aaron.omullan@gmail.com>
Date: Mon, 24 Aug 2015 21:37:09 +0200
Subject: [PATCH] Add nil check on CredentialsCallback wrapper

---
 remote.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/remote.go b/remote.go
index e1e4845..b2fb96f 100644
--- a/remote.go
+++ b/remote.go
@@ -214,7 +214,9 @@ func credentialsCallback(_cred **C.git_cred, _url *C.char, _username_from_url *C
 	url := C.GoString(_url)
 	username_from_url := C.GoString(_username_from_url)
 	ret, cred := callbacks.CredentialsCallback(url, username_from_url, (CredType)(allowed_types))
-	*_cred = cred.ptr
+	if cred != nil {
+		*_cred = cred.ptr
+	}
 	return int(ret)
 }