[TheFreeNetwork][fix_duplicates.php] Don't die because you couldn't federate an undo follow

plugins/OStatus/OStatusPlugin.php

@@ -710,7 +710,7 @@ class OStatusPlugin extends Plugin
      * @param Profile $profile  subscriber
      * @param Profile $other    subscribee
      *
-     * @return hook return code
+     * @return bool hook return code
      *
      * @throws Exception
      */
@@ -735,7 +735,7 @@ class OStatusPlugin extends Plugin
      * @param Profile $profile  subscriber
      * @param Profile $other    subscribee
      *
-     * @return hook return code
+     * @return bool hook return code
      *
      * @throws Exception
      */

plugins/OStatus/classes/Ostatus_profile.php

@@ -385,7 +385,7 @@ class Ostatus_profile extends Managed_DataObject
      *
      * @param mixed $entry XML string, Notice, or Activity
      * @param Profile $actor
-     * @return boolean success
+     * @return bool success
      */
     public function notifyActivity($entry, Profile $actor)
     {

plugins/OStatus/lib/salmon.php

@@ -43,11 +43,16 @@ class Salmon
      *
      * @param string $endpoint_uri
      * @param string $xml string representation of payload
-     * @param Profile $user profile whose keys we sign with (must be a local user)
-     * @return boolean success
+     * @param Profile $actor profile whose keys we sign with (must be a local user)
+     * @param Profile|null $target
+     * @return bool success
      */
-    public static function post($endpoint_uri, $xml, Profile $actor, Profile $target=null)
-    {
+    public static function post(
+        $endpoint_uri,
+        $xml,
+        Profile $actor,
+        ?Profile $target = null
+    ) {
         if (empty($endpoint_uri)) {
             common_debug('No endpoint URI for Salmon post to '.$actor->getUri());
             return false;