fix memory leaks and other things in 29/btree.c#20

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sci-42ver wants to merge 2 commits intoxxyzz:masterfrom sci-42ver:mem_leak_etc_patch

+47-11

Commits on Sep 4, 2023

fix memory leaks and other things in 29/btree.c
czg
committed

Commits on Sep 7, 2023

update 29/btree.c
czg
committed