[saint] fix metadata names/IDs of '/d/' URLs

gallery_dl/extractor/lolisafe.py

@@ -53,9 +53,10 @@ class LolisafeAlbumExtractor(LolisafeExtractor):
             if "name" in file:
                 name = file["name"]
                 file["name"] = name.rpartition(".")[0] or name
-                fid = file["filename"].rpartition("-")[2]
-                if len(fid) == 12:
-                    file["id"] = ""
+                _, sep, fid = file["filename"].rpartition("-")
+                if not sep or len(fid) == 12:
+                    if "id" not in file:
+                        file["id"] = ""
                     file["filename"] = file["name"]
                 else:
                     file["id"] = fid

gallery_dl/extractor/saint.py

@@ -81,6 +81,7 @@ class SaintMediaExtractor(SaintAlbumExtractor):
             else:  # /d/
                 file = {
                     "file"     : text.unescape(extr('<a href="', '"')),
+                    "id"       : album_id,
                     "id_dl"    : album_id,
                     "name"     : album_id,
                     "filename" : album_id,