Avoid problems with Doxygen by adding warn_unused_result attribute at the end of method signatures

src/libstrongswan/crypto/prfs/prf.h

@@ -79,8 +79,8 @@ struct prf_t {
 	 * @param buffer	pointer where the generated bytes will be written
 	 * @return			TRUE if bytes generated successfully
 	 */
-	__attribute__((warn_unused_result))
-	bool (*get_bytes) (prf_t *this, chunk_t seed, u_int8_t *buffer);
+	bool (*get_bytes)(prf_t *this, chunk_t seed,
+					  u_int8_t *buffer) __attribute__((warn_unused_result));
 
 	/**
 	 * Generates pseudo random bytes and allocate space for them.
@@ -89,15 +89,15 @@ struct prf_t {
 	 * @param chunk		chunk which will hold generated bytes
 	 * @return			TRUE if bytes allocated and generated successfully
 	 */
-	__attribute__((warn_unused_result))
-	bool (*allocate_bytes) (prf_t *this, chunk_t seed, chunk_t *chunk);
+	bool (*allocate_bytes)(prf_t *this, chunk_t seed,
+						   chunk_t *chunk) __attribute__((warn_unused_result));
 
 	/**
 	 * Get the block size of this prf_t object.
 	 *
 	 * @return			block size in bytes
 	 */
-	size_t (*get_block_size) (prf_t *this);
+	size_t (*get_block_size)(prf_t *this);
 
 	/**
 	 * Get the key size of this prf_t object.
@@ -107,7 +107,7 @@ struct prf_t {
 	 *
 	 * @return			key size in bytes
 	 */
-	size_t (*get_key_size) (prf_t *this);
+	size_t (*get_key_size)(prf_t *this);
 
 	/**
 	 * Set the key for this prf_t object.
@@ -115,13 +115,13 @@ struct prf_t {
 	 * @param key		key to set
 	 * @return			TRUE if key set successfully
 	 */
-	__attribute__((warn_unused_result))
-	bool (*set_key) (prf_t *this, chunk_t key);
+	bool (*set_key)(prf_t *this,
+					chunk_t key) __attribute__((warn_unused_result));
 
 	/**
 	 * Destroys a prf object.
 	 */
-	void (*destroy) (prf_t *this);
+	void (*destroy)(prf_t *this);
 };
 
 #endif /** PRF_H_ @}*/