filter: minor style to reduce stable diff

src/etc/inc/filter.inc

 <?php
+
 /*
     Copyright (C) 2004-2007 Scott Ullrich
     Copyright (C) 2005 Bill Marquette

src/etc/inc/filter.lib.inc

 <?php
+
 /**
  *    Copyright (C) 2016 Deciso B.V.
- *
  *    All rights reserved.
  *
  *    Redistribution and use in source and binary forms, with or without
@@ -24,7 +24,6 @@
  *    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  *    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  *    POSSIBILITY OF SUCH DAMAGE.
- *
  */
 
 function filter_core_bootstrap($fw)