Fix test suite fail in IE6/7 on event:undelegate - was failing an if where it shouldn't

src/event.js

@@ -1036,7 +1036,7 @@ jQuery.each(["live", "die"], function( i, name ) {
 		}
 
 		if ( name === "die" && !types &&
-					origSelector && origSelector[0] === "." ) {
+					origSelector && origSelector.charAt(0) === "." ) {
 
 			context.unbind( origSelector );
 

test/unit/event.js

@@ -2027,7 +2027,7 @@ test("delegate with submit", function() {
 	jQuery(document).undelegate();
 });
 
-test("undelegate() with only namespaces", function(){
+test("undelegate() with only namespaces", function() {
 	expect(2);
 
 	var $delegate = jQuery("#liveHandlerOrder"),