Update NEWS

Author: laruence

NEWS

@@ -3,6 +3,8 @@
 ?? Feb 2015, PHP 5.6.7
 
 - Core:
+  . Fixed bug #69139 (Crash in gc_zval_possible_root on unserialize).
+    (Laruence)
   . Fixed bug #69121 (Segfault in get_current_user when script owner is not
     in passwd with ZTS build). (dan at syneto dot net)
   . Fixed bug #65593 (Segfault when calling ob_start from output buffering