Let's try to get test_workqueue working on windows

changes/test-workqueue-windows

@@ -0,0 +1,3 @@
+  o Testing:
+    - Make the test-workqueue test work on windows by initializing the
+      network before we begin.

src/test/test_workqueue.c

@@ -369,6 +369,7 @@ main(int argc, char **argv)
   }
 
   init_logging(1);
+  network_init();
   crypto_global_init(1, NULL, NULL);
   crypto_seed_rng();