Tooltip potential setinterval endless loop

Hello!

I'm working on a bigger project, with hundreds of draggables, droppables, and many of them has tooltip too.

In this kind of situations, sometimes i've noticed, that an endless loop going on because of the tooltip. (Casues 100% cpu eating).

The problem is here:

	// Handle tracking tooltips that are shown with a delay (#8644). As soon
		// as the tooltip is visible, position the tooltip using the most recent
		// event.
		if ( this.options.show && this.options.show.delay ) {
			delayedShow = setInterval(function() {
				if ( tooltip.is( ":visible" ) ) {
					position( positionOption.of );
					clearInterval( delayedShow );
				}
			}, $.fx.interval );
		}

If the tooltip is not visible, when the interval executes, then it will never clears itself.

Possible solution is to put that outside of that if, but i'm not sure of the whole inner structure of the tooltip.