Revert part of r1484, I got it exactly backwards.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1501 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/heritage.h

@@ -121,7 +121,7 @@ struct params {
 	unsigned		ping_interval;
 };
 
-extern struct params * volatile params;
+extern volatile struct params *params;
 extern struct heritage heritage;
 
 void child_main(void);

bin/varnishd/varnishd.c

@@ -66,7 +66,7 @@
 #endif
 
 struct heritage heritage;
-struct params * volatile params;
+volatile struct params *params;
 
 /*--------------------------------------------------------------------*/