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

srcpkgs/chroot-git/template

@@ -1,14 +1,14 @@
 # Template file for 'chroot-git'
 pkgname=chroot-git
 version=2.24.1
-revision=1
+revision=2
 bootstrap=yes
 wrksrc="git-${version}"
 build_style=gnu-configure
 configure_args="--without-curl --without-openssl
  --without-python --without-expat --without-tcltk
  ac_cv_lib_curl_curl_global_init=no ac_cv_lib_expat_XML_ParserCreate=no
- ac_cv_snprintf_returns_bogus=no"
+ ac_cv_snprintf_returns_bogus=no ac_cv_fread_reads_directories=yes"
 makedepends="zlib-devel"
 short_desc="GIT Tree History Storage Tool -- for xbps-src use"
 maintainer="Enno Boland <gottox@voidlinux.org>"
@@ -23,13 +23,6 @@ else
 	configure_args+=" --with-zlib=${XBPS_MASTERDIR}/usr"
 fi
 
-case "$XBPS_TARGET_MACHINE" in
-	*-musl)
-		configure_args+=" ac_cv_fread_reads_directories=yes"
-		;;
-	*) configure_args+=" ac_cv_fread_reads_directories=no" ;;
-esac
-
 post_configure() {
 	cat <<-EOF >config.mak
 	CC_LD_DYNPATH=-L