Fix sending sfw logs on empty table

Author: davydovct

CleanTalk/lib/Cleantalk/Antispam/SFW.php

@@ -281,10 +281,8 @@ public function send_logs() {
 			} else {
 				return $result;
 			}
-				
-		} else {
-			return array('error' => true, 'error_string' => 'NO_LOGS_TO_SEND');
 		}
+		return false;
 	}
 
 	/*

CleanTalk/lib/Cleantalk/ApbctXF2/Funcs.php

@@ -84,7 +84,7 @@ public function ctSFWUpdate($access_key) {
 	public function ctSFWSendLogs($access_key) {
 		$sfw = new CleantalkSFW($access_key);
 		$result = $sfw->send_logs();
-		if (empty($result['error'])) {
+		if ($result) {
 			$this->app->repository('XF:Option')->updateOption('ct_sfw_last_send_log',time());
 		}
 	}