Scan does not know that java.lang.Class.isInstance(o) returns false if o == null

[saberduck (Tibor Blenessy)]

hello @nielsbasjes,

indeed this looks like false positive, because engine is not aware about behavior of isInstance method (it would work with instanceof operator). I created ticket to handle it https://jira.sonarsource.com/browse/SONARJAVA-3187