Fixed make no_optimization runs indefinitely when run the memcost example provided  (#126)
Fixed make no_optimization runs indefinitely when run the memcost example provided  (#126)

* fixed make no_optimization runs indefinitely when run the memcost example provided

* format plan_memory.cc

sxjscience/tvm,sxjscience/tvm,tqchen/tvm,tqchen/tvm,Laurawly/tvm-1,dmlc/tvm,tqchen/tvm,dmlc/tvm,sxjscience/tvm,sxjscience/tvm,Laurawly/tvm-1,Laurawly/tvm-1,sxjscience/tvm,dmlc/tvm,Laurawly/tvm-1,sxjscience/tvm,dmlc/tvm,tqchen/tvm,Laurawly/tvm-1,Huyuwei/tvm,tqchen/tvm,Huyuwei/tvm,sxjscience/tvm,sxjscience/tvm,Huyuwei/tvm,dmlc/tvm,Laurawly/tvm-1,Huyuwei/tvm,sxjscience/tvm,Laurawly/tvm-1,Laurawly/tvm-1,dmlc/tvm,Huyuwei/tvm,tqchen/tvm,Laurawly/tvm-1,Huyuwei/tvm,Laurawly/tvm-1,tqchen/tvm,tqchen/tvm,dmlc/tvm,dmlc/tvm,tqchen/tvm,Huyuwei/tvm,Huyuwei/tvm,Huyuwei/tvm,dmlc/tvm,tqchen/tvm