Zero newly allocated space, to avoid (in some cases) passing an

unclean buffer to Perl_is_utf8_string which proceeds to strlen() it,
causing an illegal access with malloc_flags J as it runs past the
end of the 0xd0d0d0.

Note there are various other problems with YAML::Syck and upstream
recommend not using it - see the README file.

ok jasper@

devel/p5-YAML-Syck/Makefile

@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.7 2010/05/31 01:59:37 kevlo Exp $
+# $OpenBSD: Makefile,v 1.8 2010/09/22 10:50:51 sthen Exp $
 
 COMMENT=	YAML and JSON for perl, optimized C
 
@@ -6,6 +6,7 @@ SHARED_ONLY=	Yes
 MODULES=	cpan
 
 DISTNAME=	YAML-Syck-1.08
+REVISION=	0
 CATEGORIES=	devel
 
 # MIT

devel/p5-YAML-Syck/patches/patch-syck_h

@@ -0,0 +1,15 @@
+$OpenBSD: patch-syck_h,v 1.1 2010/09/22 10:50:51 sthen Exp $
+
+zeroing allocated space avoids a perl segfault with malloc_flags J.
+
+--- syck.h.orig	Wed Sep 22 10:22:37 2010
++++ syck.h	Wed Sep 22 10:23:24 2010
+@@ -75,7 +75,7 @@ extern "C" {
+ 
+ #define ALLOC_CT 8
+ #define SYCK_BUFFERSIZE 4096
+-#define S_ALLOC_N(type,n) (type*)malloc(sizeof(type)*(n))
++#define S_ALLOC_N(type,n) (type*)calloc((n),sizeof(type))
+ #define S_ALLOC(type) (type*)malloc(sizeof(type))
+ #define S_REALLOC_N(var,type,n) (var)=(type*)realloc((char*)(var),sizeof(type)*(n))
+ #define S_FREE(n) free(n); n = NULL;