Make sure that the ready event doesn't double-fire when .bind(ready) is used. Fixes #7247.

src/core.js

@@ -424,8 +424,8 @@ jQuery.extend({
 			}
 
 			// Trigger any bound ready events
-			if ( jQuery.fn.triggerHandler ) {
-				jQuery( document ).triggerHandler( "ready" );
+			if ( jQuery.fn.trigger ) {
+				jQuery( document ).trigger( "ready" ).unbind( "ready" );
 			}
 		}
 	},