ecore_main: silence warning when compiling.
Silence compilation warning.
There is an ifdef'd block of code which accesses obj but
I don't think it's in use in production?
Test Plan: Build EFL and watch for warning.
Reviewers: committers, zmike, Hermet
Reviewed By: committers, Hermet
Differential Revision: https://phab.enlightenment.org/D6628