Small server protocol cleanups.

diff --git a/server/trace.c b/server/trace.c
index c47b4ba..f8bafa6 100644
--- a/server/trace.c
+++ b/server/trace.c
@@ -985,8 +985,7 @@
     fprintf( stderr, " header_size=%d,", req->header_size );
     fprintf( stderr, " base=%p,", req->base );
     fprintf( stderr, " shared_file=%d,", req->shared_file );
-    fprintf( stderr, " shared_size=%d,", req->shared_size );
-    fprintf( stderr, " anonymous=%d", req->anonymous );
+    fprintf( stderr, " shared_size=%d", req->shared_size );
 }
 
 static void dump_create_device_request( const struct create_device_request *req )