dvr: Added missing directory to rerecord-entry

Previously if you had a directory set on a recording and this recording
needed to be rerecorded, the directory was not kept in the new entry.

Author: Malex14

src/dvr/dvr_db.c

@@ -1480,6 +1480,7 @@ dvr_entry_rerecord(dvr_entry_t *de)
   htsmsg_add_str2(conf, "owner", de->de_owner);
   htsmsg_add_str2(conf, "creator", de->de_creator);
   htsmsg_add_str(conf, "comment", buf);
+  htsmsg_add_str(conf, "directory", de->de_directory);
   de2 = dvr_entry_create_from_htsmsg(conf, e);
   htsmsg_destroy(conf);