Corrected coding style

Author: Mika Leppänen

source/Security/protocols/msg_sec_prot/msg_sec_prot.c

@@ -135,7 +135,7 @@ static void msg_sec_prot_state_machine(sec_prot_t *prot)
             break;
         case MSG_STATE_FINISH:
             sec_prot_state_set(prot, &data->common, MSG_STATE_FINISHED);
-            /* fall through */
+        /* fall through */
         case MSG_STATE_FINISHED:
             prot->finished(prot);
             break;