moved tls_t existance test into tls_eap_create() again

src/libcharon/plugins/eap_tls/eap_tls.c

@@ -141,11 +141,6 @@ static eap_tls_t *eap_tls_create(identification_t *server,
 	frag_size = lib->settings->get_int(lib->settings,
 					"charon.plugins.eap-tls.fragment_size", MAX_FRAGMENT_LEN);
 	tls = tls_create(is_server, server, peer, TLS_PURPOSE_EAP_TLS, NULL);
-	if (!tls)
-	{
-		free(this);
-		return NULL;
-	}
 	this->tls_eap = tls_eap_create(EAP_TLS, tls, frag_size);
 	if (!this->tls_eap)
 	{

src/libcharon/plugins/eap_tnc/eap_tnc.c

@@ -143,11 +143,6 @@ static eap_tnc_t *eap_tnc_create(identification_t *server,
 	frag_size = lib->settings->get_int(lib->settings,
 					"charon.plugins.eap-tnc.fragment_size", MAX_FRAGMENT_LEN);
 	tnc_if_tnccs = tnc_if_tnccs_create(is_server, TLS_PURPOSE_EAP_TNC);
-	if (!tnc_if_tnccs)
-	{
-		free(this);
-		return NULL;
-	}
 	this->tls_eap = tls_eap_create(EAP_TNC, tnc_if_tnccs, frag_size);
 	if (!this->tls_eap)
 	{

src/libcharon/plugins/eap_ttls/eap_ttls.c

@@ -148,11 +148,6 @@ static eap_ttls_t *eap_ttls_create(identification_t *server,
 	frag_size = lib->settings->get_int(lib->settings,
 					"charon.plugins.eap-ttls.fragment_size", MAX_FRAGMENT_LEN);
 	tls = tls_create(is_server, server, peer, TLS_PURPOSE_EAP_TTLS, application);
-	if (!tls)
-	{
-		free(this);
-		return NULL;
-	}
 	this->tls_eap = tls_eap_create(EAP_TTLS, tls, frag_size);
 	if (!this->tls_eap)
 	{

src/libtls/tls_eap.c

@@ -325,6 +325,11 @@ tls_eap_t *tls_eap_create(eap_type_t type, tls_t *tls, size_t frag_size)
 {
 	private_tls_eap_t *this;
 
+	if (!tls)
+	{
+		return NULL;
+	}
+
 	INIT(this,
 		.public = {
 			.initiate = _initiate,