Some Doxygen fixes.

src/libcharon/plugins/eap_radius/eap_radius_accounting.h

@@ -15,7 +15,7 @@
 
 /**
  * @defgroup eap_radius_accounting eap_radius_accounting
- * @{ @ingroup
+ * @{ @ingroup eap_radius
  */
 
 #ifndef EAP_RADIUS_ACCOUNTING_H_

src/libcharon/plugins/eap_radius/radius_message.h

@@ -264,7 +264,7 @@ struct radius_message_t {
 /**
  * Create an empty RADIUS request message.
  *
- * @code				request type
+ * @param code			request type
  * @return				radius_message_t object
  */
 radius_message_t *radius_message_create_request(radius_message_code_t code);

src/libtls/tls_crypto.h

@@ -527,7 +527,7 @@ struct tls_crypto_t {
 	 * @param id			identity the session is bound to
 	 * @param client_random	random data from client hello
 	 * @param server_random	random data from server hello
-	 * @param
+	 * @return				selected suite
 	 */
 	tls_cipher_suite_t (*resume_session)(tls_crypto_t *this, chunk_t session,
 										 identification_t *id,
@@ -566,7 +566,7 @@ struct tls_crypto_t {
  * Create a tls_crypto instance.
  *
  * @param tls			TLS stack
- * @param tls_cache		TLS session cache
+ * @param cache			TLS session cache
  * @return				TLS crypto helper
  */
 tls_crypto_t *tls_crypto_create(tls_t *tls, tls_cache_t *cache);