FIX : $resaction not used in all case

Please integrate on next 5.0

htdocs/core/class/hookmanager.class.php

@@ -231,15 +231,15 @@ class HookManager
                     	if (is_array($parameters) && ! empty($parameters['special_code']) && $parameters['special_code'] > 3 && $parameters['special_code'] != $actionclassinstance->module_number) continue;
 
                     	//dol_syslog("Call method ".$method." of class ".get_class($actionclassinstance).", module=".$module.", hooktype=".$hooktype, LOG_DEBUG);
-                    	$result = $actionclassinstance->$method($parameters, $object, $action, $this); // $object and $action can be changed by method ($object->id during creation for example or $action to go back to other action for example)
+                    	$resaction = $actionclassinstance->$method($parameters, $object, $action, $this); // $object and $action can be changed by method ($object->id during creation for example or $action to go back to other action for example)
 
                     	if (! empty($actionclassinstance->results) && is_array($actionclassinstance->results)) $this->resArray =array_merge($this->resArray, $actionclassinstance->results);
                     	if (! empty($actionclassinstance->resprints)) $this->resPrint.=$actionclassinstance->resprints;
                     	// TODO dead code to remove (do not enable this, but fix hook instead): result must not be a string. we must use $actionclassinstance->resprints to return a string
-                    	if (! is_array($result) && ! is_numeric($result))
+                    	if (! is_array($resaction) && ! is_numeric($resaction))
                     	{
                     		dol_syslog('Error: Bug into hook '.$method.' of module class '.get_class($actionclassinstance).'. Method must not return a string but an int (0=OK, 1=Replace, -1=KO) and set string into ->resprints', LOG_ERR);
-                    		if (empty($actionclassinstance->resprints)) { $this->resPrint.=$result; $result=0; }
+                    		if (empty($actionclassinstance->resprints)) { $this->resPrint.=$resaction; $resaction=0; }
                     	}
                     }