Fix line numbers detection in tests for OTP >= 17

test/lager_test_backend.erl

@@ -109,7 +109,7 @@ print_bad_state() ->
 has_line_numbers() ->
     %% are we R15 or greater
     Rel = erlang:system_info(otp_release),
-    {match, [Major]} = re:run(Rel, "^R(\\d+)[A|B](|0(\\d))", [{capture, [1], list}]),
+    {match, [Major]} = re:run(Rel, "(?|(^R(\\d+)[A|B](|0(\\d)))|(^(\\d+)$))", [{capture, [2], list}]),
     list_to_integer(Major) >= 15.
 
 not_running_test() ->