Minor refactors across the board

- when-let* -> when-let
- Fix projectile-locate-dominating-file for connected remote files

modules/app/regex/autoload/regex.el

@@ -259,7 +259,7 @@ __DATA__
           (overlay-put ov 'category '+regex))
         (cl-incf i)
         (dotimes (i 10)
-          (when-let* ((text (match-string i)))
+          (when-let (text (match-string i))
             (save-match-data
               (with-current-buffer +regex--groups-buffer
                 (goto-char (point-max))