bug#73259: Manual page database generation broken

[Ludovic Courtès]

Man page database generation has been broken since the ‘core-updates’
merge it would seem:

--8<---------------cut here---------------start------------->8---
Creating manual page database...
[  1/1422] building list of man-db entries...

[...]

[ 65/1422] building list of man-db entries...In thread:
In procedure open-file: Too many open files: 
"/gnu/store/85hmpisfjayarpnzbw0ma4l02nncms5q-libxtst-1.2.3/share/man/man3/XTestCompareCurrentCursorWithWindow.3.zst"
In thread:
In procedure open-file: Too many open files: 
"/gnu/store/wxwv020jwxq9gr070vwy3fh8n028gwqg-libxau-1.0.10/share/man/man3/XauDisposeAuth.3.zst"
In thread:
In procedure open-file: Too many open files: 
"/gnu/store/wxwv020jwxq9gr070vwy3fh8n028gwqg-libxau-1.0.10/share/man/man3/XauDisposeAuth.3.zst"
In thread:
In procedure open-file: Too many open files: 
"/gnu/store/wxwv020jwxq9gr070vwy3fh8n028gwqg-libxau-1.0.10/share/man/man3/XauDisposeAuth.3.zst"

349 entries processed in 0.6 s
--8<---------------cut here---------------end--------------->8---

Maybe something with commit 822455580273ea8b3c1059922e2b41a395103164?

Ludo’.