dont try to set headers if content already sent

1 files changed, 1 insertions, 1 deletions

diff --git a/it.class b/it.class
index 57126dd..52d54ed 100644
--- a/it.class
+++ b/it.class
@@ -269,7 +269,7 @@ static function error($p = array())
 
 	if ($p['fatal'])
 	{
-		if ($_SERVER['REMOTE_ADDR'])
+		if ($_SERVER['REMOTE_ADDR'] && !headers_sent())
 			header("HTTP/1.0 500 Internal Server Error");
 		exit(99);
 	}