Fixed typo from commit 542099a2.

src/attributes.js

@@ -163,8 +163,8 @@ jQuery.fn.extend({
 
 jQuery.each({
 	removeAttr: function( name ) {
-		jQuery.attr( this, name, "" );
-		if (this.nodeType == 1) {
+		if ( this.nodeType === 1 ) {
+			this[ jQuery.isXMLDoc( this ) ? name : jQuery.props[ name ] || name ] = null;
 			this.removeAttribute( name );
 		}
 	},

src/event.js

@@ -680,7 +680,7 @@ function trigger( type, elem, args ) {
 if ( !jQuery.support.focusBubbles ) {
 
 jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ){
-	event.special[ orig ] = {
+	jQuery.event.special[ orig ] = {
 		setup: function() {
 			jQuery.event.add( this, fix, ieHandler );
 		},