Fix #109.

include/account.php

@@ -67,7 +67,7 @@ function check_account_invite($invite_code) {
 			$result['message'] .= t('An invitation is required.') . EOL;
 		}
 		$r = q("select * from register where `hash` = '%s' limit 1", dbesc($invite_code));
-		if(! results($r)) {
+		if(! $r) {
 			$result['message'] .= t('Invitation could not be verified.') . EOL;
 		}
 	}
@@ -718,4 +718,4 @@ function upgrade_message($bbcode = false) {
 function upgrade_bool_message($bbcode = false) {
 	$x = upgrade_link($bbcode);
 	return t('This action is not available under your subscription plan.') . (($x) ? ' ' . $x : '') ;
-}
+}