TableView reloadData issue

[tosty33]

Hello,

I think that there should be a check if the first element even exists in the tableView:

framework-widget/widgetLibrary/widget_tableview.lua

Line 1687 in 9c1aed5

if ( self._rows[ 1 ].isCategory ) then

Right now CoronaSDK throws an error when trying to reload empty table view.