Use RETURN_BOOL()

Author: adoy

ext/curl/interface.c

@@ -4007,11 +4007,7 @@ PHP_FUNCTION(curl_upkeep)
 	error = curl_easy_upkeep(ch->cp);
 	SAVE_CURL_ERROR(ch, error);
 
-	if (error != CURLE_OK) {
-		RETURN_FALSE;
-	} else {
-		RETURN_TRUE;
-	}
+	RETURN_BOOL(error == CURLE_OK);
 }
 /*}}} */
 #endif