midx4: Fix the other side of my previous nasty bug
The previous one was a problem with midx4s generated from idx files,
this one is similar but when they are generated from other .midx4 files.
Many thanks to Aneurin Price for putting up with the awful behavior and
prodding at bup and whatnot while I was trying to make this one
disappear under a rug.
Once again, midx4 files generated prior to this patch will want to be
regenerated. Once again, only smart servers which have objects not on
the client's index cache will be effected, but they sure as hell well be
effected.
projects / bup.git / commit