[automerger] Add check preventing div0 issue am: 27e47ce3c3 am: 357017a262 am: fef8617324 am: a7d57f7a14 am: 19d80c34be am: 96fa1d1842

Change-Id: Ic46fb0fa6e83c50682bdf2f9a5435bc682ee39c7