Fix var error in fnSetFilteringDelay - just a warning, but good to tidy up

api/fnSetFilteringDelay.js

@@ -12,32 +12,34 @@
  */
 
 jQuery.fn.dataTableExt.oApi.fnSetFilteringDelay = function ( oSettings, iDelay ) {
-    var
-        _that = this,
-        iDelay = (typeof iDelay == 'undefined') ? 250 : iDelay;
+	var _that = this;
 
-    this.each( function ( i ) {
-        $.fn.dataTableExt.iApiIndex = i;
-        var
-            $this = this, 
-            oTimerId = null, 
-            sPreviousSearch = null,
-            anControl = $( 'input', _that.fnSettings().aanFeatures.f );
+	if ( iDelay === undefined ) {
+		iDelay = 250;
+	}
 	 
-            anControl.unbind( 'keyup' ).bind( 'keyup', function() {
-            var $$this = $this;
+	this.each( function ( i ) {
+		$.fn.dataTableExt.iApiIndex = i;
+		var
+			$this = this, 
+			oTimerId = null, 
+			sPreviousSearch = null,
+			anControl = $( 'input', _that.fnSettings().aanFeatures.f );
 		 
-            if (sPreviousSearch === null || sPreviousSearch != anControl.val()) {
-                window.clearTimeout(oTimerId);
-                sPreviousSearch = anControl.val();  
-                oTimerId = window.setTimeout(function() {
-                    $.fn.dataTableExt.iApiIndex = i;
-                    _that.fnFilter( anControl.val() );
-                }, iDelay);
-            }
-        });
+			anControl.unbind( 'keyup' ).bind( 'keyup', function() {
+			var $$this = $this;
  
-        return this;
-    } );
-    return this;
+			if (sPreviousSearch === null || sPreviousSearch != anControl.val()) {
+				window.clearTimeout(oTimerId);
+				sPreviousSearch = anControl.val();  
+				oTimerId = window.setTimeout(function() {
+					$.fn.dataTableExt.iApiIndex = i;
+					_that.fnFilter( anControl.val() );
+				}, iDelay);
+			}
+		});
+		 
+		return this;
+	} );
+	return this;
 };