check the call back function for null.

This commit is contained in:
Lars Brubaker 2015-11-06 09:44:31 -08:00
parent ff0353108b
commit 757ce75620

@ -1 +1 @@
Subproject commit b9c6294f15209487ea3dcff51b31f14a2bc98e84
Subproject commit c1965631a5d271a4e9b4d2feaeacde5b3a722c85