osd: use std::string::starts_with() in PGLog::read_log_and_missing()

Signed-off-by: Radoslaw Zarzynski <[email protected]>

Author: rzarzynski

src/osd/PGLog.h

@@ -1479,7 +1479,7 @@ struct PGLog : DoutPrefixProvider {
 	  decode(on_disk_rollback_info_trimmed_to, bp);
 	} else if (key == "may_include_deletes_in_missing") {
 	  missing.may_include_deletes = true;
-	} else if (key.substr(0, 7) == std::string("missing")) {
+	} else if (key.starts_with("missing")) {
 	  hobject_t oid;
 	  pg_missing_item item;
 	  decode(oid, bp);
@@ -1489,7 +1489,7 @@ struct PGLog : DoutPrefixProvider {
 	    ceph_assert(missing.may_include_deletes);
 	  }
 	  missing.add(oid, std::move(item));
-	} else if (key.substr(0, 4) == std::string("dup_")) {
+	} else if (key.starts_with("dup_")) {
 	  ++total_dups;
 	  pg_log_dup_t dup;
 	  decode(dup, bp);