Use standard unsigned integer types

src/libstrongswan/crypto/prfs/mac_prf.c

@@ -36,7 +36,7 @@ struct private_prf_t {
 };
 
 METHOD(prf_t, get_bytes, bool,
-	private_prf_t *this, chunk_t seed, u_int8_t *buffer)
+	private_prf_t *this, chunk_t seed, uint8_t *buffer)
 {
 	return this->mac->get_mac(this->mac, seed, buffer);
 }

src/libstrongswan/crypto/prfs/prf.h

@@ -80,7 +80,7 @@ struct prf_t {
 	 * @return			TRUE if bytes generated successfully
 	 */
 	bool (*get_bytes)(prf_t *this, chunk_t seed,
-					  u_int8_t *buffer) __attribute__((warn_unused_result));
+					  uint8_t *buffer) __attribute__((warn_unused_result));
 
 	/**
 	 * Generates pseudo random bytes and allocate space for them.