Just some tweaks

scenes/nfc_playlist_scene_file_rename.c

@@ -17,6 +17,7 @@ void nfc_playlist_file_rename_menu_callback(void* context) {
       storage_common_rename_safe(storage, furi_string_get_cstr(nfc_playlist->settings.file_path), furi_string_get_cstr(tmp_new_file_path));
       nfc_playlist->settings.file_path = furi_string_alloc_set_str(furi_string_get_cstr(tmp_new_file_path));
    }
+   
    furi_record_close(RECORD_STORAGE);
    furi_string_free(tmp_new_file_path);
    furi_string_free(tmp_old_file_path);

scenes/nfc_playlist_scene_name_new_file.c

@@ -23,10 +23,10 @@ void nfc_playlist_name_new_file_menu_callback(void* context) {
 
 void nfc_playlist_name_new_file_scene_on_enter(void* context) {
    NfcPlaylist* nfc_playlist = context;
-   nfc_playlist->text_input_output = (char*)malloc(50);
+   nfc_playlist->text_input_output = (char*)malloc(50*sizeof(char));
    text_input_set_header_text(nfc_playlist->text_input, "Enter file name");
    text_input_set_minimum_length(nfc_playlist->text_input, 1);
-   text_input_set_result_callback(nfc_playlist->text_input, nfc_playlist_name_new_file_menu_callback, nfc_playlist, nfc_playlist->text_input_output, 50, true);
+   text_input_set_result_callback(nfc_playlist->text_input, nfc_playlist_name_new_file_menu_callback, nfc_playlist, nfc_playlist->text_input_output, 50*sizeof(char), true);
 
    view_dispatcher_switch_to_view(nfc_playlist->view_dispatcher, NfcPlaylistView_TextInput);
 }