chroot-git: correct ac_cv_fread_reads_directories
chroot-git: correct ac_cv_fread_reads_directories

From commit 9c0d651aa3, (chroot-git: update to 2.19.2., 2018-11-21),
ac_cv_fread_reads_directories for musl had been set to correct value,
but the value for glibc hadn't been corrected.

This oversight maybe caused by copy-pasted from my change in git's
template.

Correct it

necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages