fix use after free bug
fix use after free bug

regehr/souper,rsas/souper,chubbymaggie/souper,lazyparser/souper,lazyparser/souper,google/souper,chenyang78/souper,jubitaneja/souper,rsas/souper,google/souper,chenyang78/souper,lazyparser/souper,jubitaneja/souper,chubbymaggie/souper,rsas/souper,chubbymaggie/souper,chenyang78/souper,regehr/souper,rsas/souper,jubitaneja/souper,regehr/souper,jubitaneja/souper,regehr/souper,jubitaneja/souper,regehr/souper,google/souper,chenyang78/souper,google/souper,lazyparser/souper,chubbymaggie/souper,lazyparser/souper,chenyang78/souper,chubbymaggie/souper,chenyang78/souper,rsas/souper,rsas/souper,google/souper,jubitaneja/souper