ITS#4810 log a message if be_entry_get doesn't return the entry we want

servers/slapd/overlays/syncprov.c

@@ -842,7 +842,10 @@ syncprov_qplay( Operation *op, slap_overinst *on, syncops *so )
 		if ( sr->s_mode != LDAP_SYNC_DELETE ) {
 			rc = be_entry_get_rw( op, &opc.sndn, NULL, NULL, 0, &e );
 			if ( rc ) {
+				Debug( LDAP_DEBUG_SYNC, "syncprov_qplay: failed to get %s, "
+					"ignoring...\n", opc.sndn.bv_val );
 				ch_free( sr );
+				rc = 0;
 				continue;
 			}
 		}