iterator: merged: i.Error() should be iter.Error()
iterator: merged: i.Error() should be iter.Error()

syndtr/goleveldb,rentongzhang/goleveldb,hustbill/goleveldb,conseweb/goleveldb,no2key/goleveldb,ngaut/goleveldb,zzl0/goleveldb,FactomProject/goleveldb,trigrass2/goleveldb,btcsuite/goleveldb,chai2010/goleveldb