Switch pkg_new -> pkg_dup in find_replacements

Ugh, it was a pain to figure out why the Total Removed Size was showing up
wrong in the output of removed packages, but this was why- we used a stupid
_alpm_pkg_new call instead of just duping the package. Fix this. In the long
run, we really need to figure out better ways to not duplicate all this
package information.

Signed-off-by: Dan McGee <dan@archlinux.org>

lib/libalpm/sync.c

@@ -147,7 +147,7 @@ static int find_replacements(pmtrans_t *trans, pmdb_t *db_local,
 					 * the package to replace.
 					 */
 					pmsyncpkg_t *sync;
-					pmpkg_t *dummy = _alpm_pkg_new(alpm_pkg_get_name(lpkg), NULL);
+					pmpkg_t *dummy = _alpm_pkg_dup(lpkg);
 					if(dummy == NULL) {
 						pm_errno = PM_ERR_MEMORY;
 						synclist_free(*syncpkgs);