Should fix App crash on exception: "UITableView dataSource is not set".
Should fix App crash on exception: "UITableView dataSource is not set".

Check whether the table view data source is set before laying out the subviews immediately.

vector-im/vector-ios,vector-im/vector-ios,vector-im/riot-ios,vector-im/riot-ios,vector-im/vector-ios,vector-im/riot-ios,vector-im/riot-ios,vector-im/riot-ios,vector-im/riot-ios