Support same file identifiers in dup_*.

1 files changed, 3 insertions, 1 deletions

diff --git a/td/telegram/VoiceNotesManager.cpp b/td/telegram/VoiceNotesManager.cpp
index c83a1a74c..edaceaeda 100644
--- a/td/telegram/VoiceNotesManager.cpp
+++ b/td/telegram/VoiceNotesManager.cpp
@@ -102,7 +102,9 @@ FileId VoiceNotesManager::dup_voice_note(FileId new_id, FileId old_id) {
   const VoiceNote *old_voice_note = get_voice_note(old_id);
   CHECK(old_voice_note != nullptr);
   auto &new_voice_note = voice_notes_[new_id];
-  CHECK(new_voice_note == nullptr);
+  if (new_voice_note != nullptr) {
+    return new_id;
+  }
   new_voice_note = make_unique<VoiceNote>();
   new_voice_note->file_id = new_id;
   new_voice_note->mime_type = old_voice_note->mime_type;