取り敢えずこうすれば死なないと思う

```
diff --git a/src/dbtree/nodetreebase.cpp b/src/dbtree/nodetreebase.cpp
index ba64e04a..b5f3d24d 100644
--- a/src/dbtree/nodetreebase.cpp
+++ b/src/dbtree/nodetreebase.cpp
@@ -1904,7 +1904,7 @@ void NodeTreeBase::parse_date_id( NODE* header, std::string_view str )

if(
// ID
- ( str[ start_block ] == 'I' && str[ start_block + 1 ] == 'D' )
+ ( str.compare (start_block, 2, "ID" ) == 0 )

// HOST
|| ( str.compare( start_block, 4, "HOST" ) == 0 )
```