Optimization suggestion for org.slf4j.helpers.MessageFormatter.arrayFormat(String, Object[], Throwable)

[dukeware]

In order to reduce unnecessary expenses:

deeplyAppendParameter(sbuf, argArray[L], new HashMap<>());

should be:

deeplyAppendParameter(sbuf, argArray[L], null);

Correspondingly, in org.slf4j.helpers.MessageFormatter.deeplyAppendParameter(StringBuilder, Object, Map<Object[], Object>)

objectArrayAppend(sbuf, (Object[]) o, seenMap);

change to:

objectArrayAppend(sbuf, (Object[]) o, seenMap != null ? seenMap : new HashMap<>());