[java] False negative in UnnecessaryLocalBeforeReturn when splitting statements across multiple lines

[davidburstromspotify]

Affects PMD Version:
6.13.0

Rule:
UnnecessaryLocalBeforeReturn

Description:
An unnecessary local is missed if chained method calls are split up on separate lines AND the method calls reference another variable.

Code Sample demonstrating the issue:

public class Test {

    public Object test1() {
        int i = 0; // the usage of i seems to be relevant for the false negative
        Object o = thing()
            .make(i);
        return o; // false negative when the chained calls are on separate lines
    }   

    public Object test2() {
        int i = 0;
        Object o = thing().make(i);
        return o; // true positive
    }   

    public Object test3() {
        Object o = thing()
            .make();
        return o; // true positive
    }   

    public Object test4() {
        Object o = thing().make();
        return o; // true positive
    }   
}

Running PMD through:
CLI/Gradle