NullPointerException in format method of console/jdk loggers

[simonbasle]

Expected behavior

Logging a message using a format with 2 placeholders should work.

Actual behavior

Logging a message using a format with 2 placeholders and at least one null value (or an equivalent, as long as the vararg is interpreted as a null-containing array) produces an NPE.

Steps to reproduce

Loggers.useConsoleLoggers();
Logger l = Loggers.getLogger("test");
l.info("test {} is {}", null, null);

Reactor Core version

3.1.10.RELEASE