Background color fix for stub view positioned between table view top edge and UISearchBar as header view

UISearchBarInTableHeaderBackgroundColorFix.m

//
// Fix background color bug
// This patch can be applied once in viewDidLoad if you use UITableViewController
// http://stackoverflow.com/q/23026531/351305
//
- (void)_fixSearchBarHeaderViewBackgroundColorBug {
	// First subview in UITableView is a stub view positioned between table's top edge and table's header view.
	UIView* stubView = [self.tableView.subviews firstObject];
	
	// Make sure it's stub view and not anything else
	if([NSStringFromClass([stubView class]) isEqualToString:@"UIView"]) {
		// Set its alpha to zero to use background color from UITableView
		stubView.alpha = 0.0f;
	}
}