Revised SQL query

Author: IMC-GER

imcger/imgupload/event/main_listener.php

@@ -96,12 +96,7 @@ public function set_template_vars()
 	{
 		$allowed_images = '';
 
-		$sql = 'SELECT group_id FROM ' . EXTENSION_GROUPS_TABLE . ' WHERE group_name = "IMAGES"';
-		$result = $this->db->sql_query($sql);
-		$row = $this->db->sql_fetchrow($result);
-		$this->db-> sql_freeresult();
-
-		$sql = 'SELECT extension FROM ' . EXTENSIONS_TABLE . ' WHERE group_id = ' . (int) $row["group_id"];
+		$sql = 'SELECT extension FROM ' . EXTENSIONS_TABLE . ' WHERE group_id = (SELECT group_id FROM ' . EXTENSION_GROUPS_TABLE . ' WHERE group_name = "IMAGES")';
 		$result = $this->db->sql_query($sql);
 
 		while ($row = $this->db->sql_fetchrow($result))