apply same fix to btree_generic.go?

[glycerine]

I notice a recent fix applied to btree.go:

aeba20f

If it is correct, is there any reason not to do the same fix to btree_generic.go ?

[glycerine]

@zhangchuanqing5658 could you advise?

[zhangchuanqing5658]

@glycerine yes, I will fix soon.

[RaduBerinde]

This sounds like a serious issue.. If I understand correctly, a modification on a tree can affect one of its clones? Is there a simple test that can show the problem?