Removed checks

td/telegram/AnimationsManager.cpp

@@ -225,7 +225,7 @@ FileId AnimationsManager::on_get_animation(unique_ptr<Animation> new_animation,
 const AnimationsManager::Animation *AnimationsManager::get_animation(FileId file_id) const {
   auto animation = animations_.find(file_id);
   if (animation == animations_.end()) {
-    return nullptr;
+    return Animation{};
   }
 
   CHECK(animation->second->file_id == file_id);

td/telegram/AudiosManager.cpp

@@ -94,7 +94,7 @@ FileId AudiosManager::on_get_audio(unique_ptr<Audio> new_audio, bool replace) {
 const AudiosManager::Audio *AudiosManager::get_audio(FileId file_id) const {
   auto audio = audios_.find(file_id);
   if (audio == audios_.end()) {
-    return nullptr;
+    return Audio{};
   }
 
   CHECK(audio->second->file_id == file_id);

td/telegram/DocumentsManager.cpp

@@ -489,7 +489,7 @@ void DocumentsManager::create_document(FileId file_id, string minithumbnail, Pho
 const DocumentsManager::GeneralDocument *DocumentsManager::get_document(FileId file_id) const {
   auto document = documents_.find(file_id);
   if (document == documents_.end()) {
-    return nullptr;
+    return GeneralDocument{};
   }
 
   CHECK(document->second->file_id == file_id);

td/telegram/StickersManager.cpp

@@ -1607,7 +1607,7 @@ std::pair<int64, FileId> StickersManager::on_get_sticker_document(
 StickersManager::Sticker *StickersManager::get_sticker(FileId file_id) {
   auto sticker = stickers_.find(file_id);
   if (sticker == stickers_.end()) {
-    return nullptr;
+    return Sticker{};
   }
 
   CHECK(sticker->second->file_id == file_id);
@@ -1617,7 +1617,7 @@ StickersManager::Sticker *StickersManager::get_sticker(FileId file_id) {
 const StickersManager::Sticker *StickersManager::get_sticker(FileId file_id) const {
   auto sticker = stickers_.find(file_id);
   if (sticker == stickers_.end()) {
-    return nullptr;
+    return Sticker{};
   }
 
   CHECK(sticker->second->file_id == file_id);
@@ -1627,7 +1627,7 @@ const StickersManager::Sticker *StickersManager::get_sticker(FileId file_id) con
 StickersManager::StickerSet *StickersManager::get_sticker_set(StickerSetId sticker_set_id) {
   auto sticker_set = sticker_sets_.find(sticker_set_id);
   if (sticker_set == sticker_sets_.end()) {
-    return nullptr;
+    return StickerSet{};
   }
 
   return sticker_set->second.get();
@@ -1636,7 +1636,7 @@ StickersManager::StickerSet *StickersManager::get_sticker_set(StickerSetId stick
 const StickersManager::StickerSet *StickersManager::get_sticker_set(StickerSetId sticker_set_id) const {
   auto sticker_set = sticker_sets_.find(sticker_set_id);
   if (sticker_set == sticker_sets_.end()) {
-    return nullptr;
+    return StickerSet{};
   }
 
   return sticker_set->second.get();

td/telegram/VideoNotesManager.cpp

@@ -84,11 +84,11 @@ FileId VideoNotesManager::on_get_video_note(unique_ptr<VideoNote> new_video_note
 const VideoNotesManager::VideoNote *VideoNotesManager::get_video_note(FileId file_id) const {
   auto video_note = video_notes_.find(file_id);
   if (video_note == video_notes_.end()) {
-    return nullptr;
+    return VideoNote{};
   }
 
   if (video_note->second->file_id != file_id) {
-      return nullptr;
+      return VideoNote{};
   }
   return video_note->second.get();
 }

td/telegram/VoiceNotesManager.cpp

@@ -71,7 +71,7 @@ FileId VoiceNotesManager::on_get_voice_note(unique_ptr<VoiceNote> new_voice_note
 const VoiceNotesManager::VoiceNote *VoiceNotesManager::get_voice_note(FileId file_id) const {
   auto voice_note = voice_notes_.find(file_id);
   if (voice_note == voice_notes_.end()) {
-    return nullptr;
+    return VoiceNote{};
   }
 
   CHECK(voice_note->second->file_id == file_id);