test: Fix two memory leaks

PR-URL: https://github.com/libuv/libuv/pull/470
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>

test/test-signal-multiple-loops.c

@@ -185,6 +185,7 @@ static void loop_creating_worker(void* context) {
     ASSERT(r == 0);
 
     uv_loop_close(loop);
+    free(loop);
 
     increment_counter(&loop_creation_counter);
   } while (!stop);

test/test-spawn.c

@@ -1401,6 +1401,7 @@ TEST_IMPL(spawn_fs_open) {
 
   fd = uv_fs_open(uv_default_loop(), &fs_req, "/dev/null", O_RDWR, 0, NULL);
   ASSERT(fd >= 0);
+  uv_fs_req_cleanup(&fs_req);
 
   init_process_options("spawn_helper8", exit_cb);