spullara/netty — comment on commit ffea6a262b90dd613857516ca9b0ac8c3e9b662e
File: src/main/java/org/jboss/netty/handler/codec/replay/ReplayingDecoder.java line 571
By spullara:

IntelliJ informed me that cumulation is always null if buf is null which was then clear from the code that it was true.