增加spawn-test的日志输出，目前riscv64架构上报错需要处理

glib/tests/spawn-test.c

@@ -110,6 +110,7 @@ test_spawn_basics (void)
                                       NULL, &erroutput, NULL, &err);
   g_assert_no_error (err);
   g_assert_true (result);
+  g_test_message ("sort non-existing-file.txt error output: %s", erroutput);
 #ifndef G_OS_WIN32
   g_assert_true (g_str_has_prefix (erroutput, "sort: "));
   g_assert_nonnull (strstr (erroutput, g_strerror (ENOENT)));