Move this.type setting to after prop set; avoid setting twice

src/event.js

@@ -580,7 +580,6 @@ jQuery.Event = function( src ) {
 	// Event object
 	if ( src && src.type ) {
 		this.originalEvent = src;
-		this.type = src.type;
 
 		// Push explicitly provided properties onto the event object
 		for ( var prop in src ) {
@@ -591,6 +590,10 @@ jQuery.Event = function( src ) {
 			}
 		}
 
+		if ( !this.type ) {
+			this.type = src.type;
+		}
+
 		// Events bubbling up the document may have been marked as prevented
 		// by a handler lower down the tree; reflect the correct value.
 		this.isDefaultPrevented = (src.defaultPrevented || src.returnValue === false ||