failtest: don't use special data structure for storing child writes.
[ccan] / ccan / failtest /
drwxr-xr-x   ..
lrwxrwxrwx 21 LICENSE -> ../../licenses/LGPL-3
-rw-r--r-- 1773 _info
-rw-r--r-- 21955 failtest.c
-rw-r--r-- 4466 failtest.h
-rw-r--r-- 1483 failtest_override.h
-rw-r--r-- 1150 failtest_proto.h
-rw-r--r-- 890 failtest_undo.h
drwxr-xr-x - test