Simplified some of the logic for handling the ajax aborts, making sure that...

Simplified some of the logic for handling the ajax aborts, making sure that ajaxStop isn't called twice.

src/ajax.js

@@ -390,18 +390,19 @@ jQuery.extend({
 
 		// Wait for a response to come back
 		var onreadystatechange = xhr.onreadystatechange = function( isTimeout ) {
-			// The request was aborted, clear the interval and decrement jQuery.active
+			// The request was aborted
 			if ( !xhr || xhr.readyState === 0 ) {
+				// Opera doesn't call onreadystatechange before this point
+				// so we simulate the call
+				if ( !requestDone ) {
+					complete();
+				}
+
 				requestDone = true;
 				if ( xhr ) {
 					xhr.onreadystatechange = jQuery.noop;
 				}
 
-				// Handle the global AJAX counter
-				if ( s.global && ! --jQuery.active ) {
-					jQuery.event.trigger( "ajaxStop" );
-				}
-
 			// The transfer is complete and the data is available, or the request timed out
 			} else if ( !requestDone && xhr && (xhr.readyState === 4 || isTimeout === "timeout") ) {
 				requestDone = true;
@@ -456,15 +457,11 @@ jQuery.extend({
 			xhr.abort = function() {
 				oldAbort.call( xhr );
 
-				if ( !requestDone ) {
-					complete();
-				}
-
 				if ( xhr ) {
-					xhr.onreadystatechange = null;
+					xhr.readyState = 0;
 				}
 
-				requestDone = true;
+				onreadystatechange();
 			};
 		} catch(e) { }