[java] RedundantFieldInitializer can not detect a special case for char initialize: char foo = '\0';

[wuchiuwong]

Affects PMD Version:
6.22.0

Rule:
RedundantFieldInitializer

Description:
RedundantFieldInitializer can not detect a special case for char initialize: char foo = '\0';
The reason for the undetectability is that '\0' can't convert to int directly, in value = (int) literal.getImage().charAt(1); in pmd-java-6.22.0-sources.jar!\net\sourceforge\pmd\lang\java\rule\performance\RedundantFieldInitializerRule.java_93
Code Sample demonstrating the issue:

char foo = '\0';

Expected outcome:
false-negative

Running PMD through:
CLI