tree 4930252748173c97f481dd4bfb0a07cd86dea4b3
parent 35db64de36421218229928969be269bd99a65ae6
author iamqizhao <toqizhao@gmail.com> 1454035898 -0800
committer iamqizhao <toqizhao@gmail.com> 1454035898 -0800

fix a nil map access bug