Simple fix from Jin Fulton to avoid returning a half-initialized module when e.g. copy_reg.py doesn't exist.  This caused a core dump.
Simple fix from Jin Fulton to avoid returning a half-initialized
module when e.g. copy_reg.py doesn't exist.  This caused a core dump.

This closes SF bug 112944.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator