Fix: broken feature

htdocs/core/class/commonobject.class.php

@@ -2479,7 +2479,7 @@ abstract class CommonObject
         $parameters=array();
         $reshook=$hookmanager->executeHooks('showLinkedObjectBlock',$parameters,$this,$action);    // Note that $action and $object may have been modified by hook
 
-        if (! $reshook)
+        if (empty($hookmanager->resPrint))
         {
         	$num = count($this->linkedObjects);
 

htdocs/core/class/hookmanager.class.php

@@ -41,6 +41,8 @@ class HookManager
 
 	// Array result
 	var $resArray=array();
+	// Printable result (int, string)
+	var $resPrint;
 
 	/**
 	 * Constructor