BHV-731: Fix issue with "Scroll To Index" in moon.DataList sample.

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
Merge pull request #1162 from enyojs/BHV-731-aarontam

BHV-731: Fix issue with "Scroll To Index" in moon.DataList sample.

Reviewed-By: Cole Davis (cole.davis@lge.com)