[tor-commits] [obfs4/master] Fix other instances of attempting to close `nil` on handshake failure.

[yawning at torproject.org]

commit 2cbefcfcd23d457cff742e4941cb705604d53ce5
Author: Yawning Angel <yawning at torproject.org>
Date:   Mon Jan 25 12:16:15 2016 +0000

    Fix other instances of attempting to close `nil` on handshake failure.
    
    Bug introduced in e52258edac55d82ff153755493d770bfbbc9a346, not in any
    released version of obfs4proxy.
---
 transports/obfs2/obfs2.go       |    3 ++-
 transports/obfs3/obfs3.go       |    3 ++-
 transports/scramblesuit/base.go |    3 ++-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/transports/obfs2/obfs2.go b/transports/obfs2/obfs2.go
index a926141..8fa6cb8 100644
--- a/transports/obfs2/obfs2.go
+++ b/transports/obfs2/obfs2.go
@@ -113,8 +113,9 @@ func (cf *obfs2ClientFactory) Dial(network, addr string, dialFn base.DialFunc, a
 	if err != nil {
 		return nil, err
 	}
+	dialConn := conn
 	if conn, err = newObfs2ClientConn(conn); err != nil {
-		conn.Close()
+		dialConn.Close()
 		return nil, err
 	}
 	return conn, nil
diff --git a/transports/obfs3/obfs3.go b/transports/obfs3/obfs3.go
index e4c3ba6..08d6be4 100644
--- a/transports/obfs3/obfs3.go
+++ b/transports/obfs3/obfs3.go
@@ -97,8 +97,9 @@ func (cf *obfs3ClientFactory) Dial(network, addr string, dialFn base.DialFunc, a
 	if err != nil {
 		return nil, err
 	}
+	dialConn := conn
 	if conn, err = newObfs3ClientConn(conn); err != nil {
-		conn.Close()
+		dialConn.Close()
 		return nil, err
 	}
 	return conn, nil
diff --git a/transports/scramblesuit/base.go b/transports/scramblesuit/base.go
index 223d085..7a71398 100644
--- a/transports/scramblesuit/base.go
+++ b/transports/scramblesuit/base.go
@@ -87,8 +87,9 @@ func (cf *ssClientFactory) Dial(network, addr string, dialFn base.DialFunc, args
 	if err != nil {
 		return nil, err
 	}
+	dialConn := conn
 	if conn, err = newScrambleSuitClientConn(conn, cf.ticketStore, ca); err != nil {
-		conn.Close()
+		dialConn.Close()
 		return nil, err
 	}
 	return conn, nil