ajaxStop was getting called too many times, separated some of the logic into...

ajaxStop was getting called too many times, separated some of the logic into the abort method itself.

src/ajax.js

@@ -455,13 +455,16 @@ jQuery.extend({
 			var oldAbort = xhr.abort;
 			xhr.abort = function() {
 				oldAbort.call( xhr );
-				if ( xhr ) {
-					xhr.readyState = 0;
-				}
+
 				if ( !requestDone ) {
 					complete();
 				}
-				onreadystatechange();
+
+				if ( xhr ) {
+					xhr.onreadystatechange = null;
+				}
+
+				requestDone = true;
 			};
 		} catch(e) { }