[master] ce7b751 Zero the pointer when we free a miniobj

[Poul-Henning Kamp]

commit ce7b751dd0657ad9f4e13cdaef07a209e353c1ab
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Mon Jan 19 09:57:53 2015 +0000

    Zero the pointer when we free a miniobj

diff --git a/include/miniobj.h b/include/miniobj.h
index 746f606..3de4091 100644
--- a/include/miniobj.h
+++ b/include/miniobj.h
@@ -22,6 +22,7 @@
 	do {								\
 		(to)->magic = (0);					\
 		free(to);						\
+		to = NULL;						\
 	} while (0)
 
 #define VALID_OBJ(ptr, type_magic)					\