fixed WEBMENTION_PROCESS_TYPE

thanks @acegiak and @dshanske

Author: pfefferle

readme.md

@@ -5,7 +5,7 @@
 **Donate link:** http://14101978.de  
 **Tags:** webmention, pingback, trackback, linkback, indieweb  
 **Requires at least:** 4.7  
-**Tested up to:** 4.7.1  
+**Tested up to:** 4.7.2  
 **Stable tag:** 3.0.0  
 **License:** MIT  
 **License URI:** http://opensource.org/licenses/MIT  

readme.txt

@@ -3,7 +3,7 @@ Contributors: pfefferle, dshanske
 Donate link: http://14101978.de
 Tags: webmention, pingback, trackback, linkback, indieweb
 Requires at least: 4.7
-Tested up to: 4.7.1
+Tested up to: 4.7.2
 Stable tag: 3.0.0
 License: MIT
 License URI: http://opensource.org/licenses/MIT

webmention.php

@@ -14,11 +14,12 @@
 
 defined( 'WEBMENTION_COMMENT_APPROVE' ) || define( 'WEBMENTION_COMMENT_APPROVE', 0 );
 defined( 'WEBMENTION_COMMENT_TYPE' ) || define( 'WEBMENTION_COMMENT_TYPE', 'webmention' );
-defined( 'WEBMENTION_PROCESS_TYPE' ) || define( 'WEBMENTION_PROCESS_TYPE', 'async' );
 
 define( 'WEBMENTION_PROCESS_TYPE_ASYNC', 'async' );
 define( 'WEBMENTION_PROCESS_TYPE_SYNC', 'sync' );
 
+defined( 'WEBMENTION_PROCESS_TYPE' ) || define( 'WEBMENTION_PROCESS_TYPE', WEBMENTION_PROCESS_TYPE_SYNC );
+
 add_action( 'plugins_loaded', array( 'Webmention_Plugin', 'init' ) );
 
 /**