Merge pull request #20768 from atm-john/15.0_fix_fatal_error_on_task_list

FIX : fatal error for $db  usage in tpl

htdocs/projet/class/task.class.php

@@ -918,6 +918,7 @@ class Task extends CommonObjectLine
 		// Add where from extra fields
 		$extrafieldsobjectkey = 'projet_task';
 		$extrafieldsobjectprefix = 'efpt.';
+		global $db; // needed for extrafields_list_search_sql.tpl
 		include DOL_DOCUMENT_ROOT.'/core/tpl/extrafields_list_search_sql.tpl.php';
 		// Add where from hooks
 		$parameters = array();