Fix an unbound local error.
Fix an unbound local error.

(I swear I fixed this before.)

kevinli7/apitools,craigcitro/apitools,b-daniels/apitools,cherba/apitools,thobrla/apitools,craigcitro/original-apitools,betamos/apitools,pcostell/apitools,houglum/apitools,google/apitools