Scandal-scarred Anthony Weiner’s mood matched the gloomy weather Monday morning as he hobbled out of his Union Square apartment on crutches, his 5-year-old son in tow. Weiner sported a cast on his right leg and a swollen ankle as he and son Jordan hailed a cab together in the rain. The Post reported Saturday that the former congressman and wife Huma Abedin, a longtime top aide to Hillary Clinton, are working on saving their six-year marriage. But when asked if the two were back together, Weiner quietly told a Post reporter, “I don’t have anything for you today but thanks...