Fix segfault on 32 bit machines

Adjust the size of the rec field to match what's in shmlog.

No corresponding -trunk commit as the code has been reworked already.

Fixes #765


git-svn-id: http://www.varnish-cache.org/svn/branches/2.1@5150 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishtop/varnishtop.c

@@ -55,7 +55,7 @@ SVNID("$Id$")
 #include "varnishapi.h"
 
 struct top {
-	unsigned char		rec[4];
+	unsigned char		rec[SHMLOG_DATA-1];
 	unsigned char		*rec_data;
 	unsigned		clen;
 	unsigned		hash;