Restructured "dba::exists" function

include/remove_contact.php

@@ -14,8 +14,8 @@ function remove_contact_run($argv, $argc) {
 	$id = intval($argv[1]);
 
 	// Only delete if the contact doesn't exist (anymore)
-	$r = dba::select('contact', array('id'), array('id' => $id), array('limit' => 1));
-	if (dbm::is_result($r)) {
+	$r = dba::exists('contact', array('id' => $id));
+	if ($r) {
 		return;
 	}