Add missing entries for PHP 5.6.23

Author: kaplanlior

NEWS

@@ -35,12 +35,15 @@ PHP                                                                        NEWS
 23 Jun 2016, PHP 5.6.23
 
 - Core:
+  . Fixed bug #72268 (Integer Overflow in nl2br()). (Stas)
   . Fixed bug #72275 (Integer Overflow in json_encode()/json_decode()/
     json_utf8_to_utf16()). (Stas)
   . Fixed bug #72400 (Integer Overflow in addcslashes/addslashes). (Stas)
   . Fixed bug #72403 (Integer Overflow in Length of String-typed ZVAL). (Stas)
 
 - GD:
+  . Fixed bug #66387 (Stack overflow with imagefilltoborder). (CVE-2015-8874)
+    (cmb)
   . Fixed bug #72298 (pass2_no_dither out-of-bounds access). (Stas)
   . Fixed bug #72337 (invalid dimensions can lead to crash) (Pierre)
   . Fixed bug #72339 (Integer Overflow in _gd2GetHeader() resulting in