fix missig directory

app/arch/libarchive/ympbuild

@@ -49,5 +49,6 @@ build() {
 }
 package() {
     make -j$(nproc) install
+    mkdir -p ${DESTDIR}/etc/ld.so.conf.d/
     echo "/usr/lib64/libarchive/" > ${DESTDIR}/etc/ld.so.conf.d/libarchive.conf
 }