[dataimport] Fix use of _create_copyfrom_buffer() (related to #3845572)
This is used indirectly by SQLGenObjectStore when running on a
PostgreSQL database.
Regression introduced by commit 70056633085c.
#! /bin/sh -e
#
if [ "$1" = configure ]; then
if which install-docs >/dev/null 2>&1; then
install-docs -i /usr/share/doc-base/cubicweb-doc
fi
fi
#DEBHELPER#
exit 0