sctp: update transport initializations

Right now, sctp transports are not fully initialized and when
adding any new fields, they have to be explicitely initialized.
This is prone to mistakes.  So we switch to calling kzalloc()
which makes things much simpler.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 5915155..289241d 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -546,7 +546,7 @@
 #define WORD_ROUND(s) (((s)+3)&~3)
 
 /* Make a new instance of type.  */
-#define t_new(type, flags)	(type *)kmalloc(sizeof(type), flags)
+#define t_new(type, flags)	(type *)kzalloc(sizeof(type), flags)
 
 /* Compare two timevals.  */
 #define tv_lt(s, t) \