Update vcl(7) for 2.1: return(foo) is mandatory.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@5067 d4fa192b-c00b-0410-8231-f00ffab90ce4

doc/sphinx/reference/vcl.rst

@@ -229,7 +229,7 @@ enclosed in parentheses, however, it will simply be ignored.
 To match an IP address against an ACL, simply use the match operator:::
 
   if (client.ip ~ local) {
-    pipe;
+    return (pipe);
   }
 
 Grace
@@ -276,7 +276,7 @@ A subroutine is used to group code for legibility or reusability:::
   
   sub pipe_if_local {
     if (client.ip ~ local) {
-      pipe;
+      return (pipe);
     }
   }
 
@@ -660,13 +660,13 @@ documents even when cookies are present:::
 
   sub vcl_recv {
     if (req.request == "GET" && req.http.cookie) {
-    call(lookup);
+       return(lookup);
     }
   }
   
   sub vcl_fetch {
     if (beresp.http.Set-Cookie) {
-    deliver;
+       return(deliver);
    }
   }
 
@@ -683,7 +683,7 @@ for object invalidation:::
       if (!client.ip ~ purge) {
         error 405 "Not allowed.";
       }
-    lookup;
+      return(lookup);
     }
   }