MDEV-18592 Warning if temp-file (with "#sql-" prefix) is missing during prepare

storage/innobase/log/log0recv.cc

@@ -3071,10 +3071,12 @@ recv_init_missing_space(dberr_t err, const recv_spaces_t::const_iterator& i)
 {
 	if (srv_operation == SRV_OPERATION_RESTORE
 	    || srv_operation == SRV_OPERATION_RESTORE_EXPORT) {
-		ib::warn() << "Tablespace " << i->first << " was not"
-			" found at " << i->second.name << " when"
-			" restoring a (partial?) backup. All redo log"
-			" for this file will be ignored!";
+		if (i->second.name.find(TEMP_TABLE_PATH_PREFIX) != std::string::npos) {
+			ib::warn() << "Tablespace " << i->first << " was not"
+				" found at " << i->second.name << " when"
+				" restoring a (partial?) backup. All redo log"
+				" for this file will be ignored!";
+		}
 		return(err);
 	}