[5.1] 01d7080 Use the new "allocate all but" debug.workspace_allocate() feature

[Poul-Henning Kamp]

commit 01d7080bf421c1f3cd57e7df8aca0d8ccc1ec588
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Thu Mar 23 17:45:19 2017 +0000

    Use the new "allocate all but" debug.workspace_allocate() feature

diff --git a/bin/varnishtest/tests/c00071.vtc b/bin/varnishtest/tests/c00071.vtc
index 77e39d3..befa08d 100644
--- a/bin/varnishtest/tests/c00071.vtc
+++ b/bin/varnishtest/tests/c00071.vtc
@@ -14,7 +14,7 @@ server s1 {
 varnish v1 -vcl+backend {
 	import debug;
 	sub vcl_deliver {
-		debug.workspace_allocate(client, debug.workspace_free(client) - 192);
+		debug.workspace_allocate(client, -192);
 
 		if (req.url ~ "/bar") {
 			set resp.http.x-foo = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
diff --git a/bin/varnishtest/tests/r01834.vtc b/bin/varnishtest/tests/r01834.vtc
index 1937da1..e5e1dbc 100644
--- a/bin/varnishtest/tests/r01834.vtc
+++ b/bin/varnishtest/tests/r01834.vtc
@@ -18,7 +18,7 @@ varnish v1 -vcl+backend {
 	}
 
 	sub vcl_backend_fetch {
-		debug.workspace_allocate(backend, debug.workspace_free(backend) - std.integer(bereq.http.WS, 256));
+		debug.workspace_allocate(backend, -1 * std.integer(bereq.http.WS, 256));
 	}
 } -start