[Java] Appending Empty List Vector yields NPE

[asfimport]

Attempting to append a list vector that is empty to another vector that is also empty using VectorAppender raises an NPE. Instead, it should just skip processing and do nothing. 

java.lang.IndexOutOfBoundsException: index: 0, length: 4 (expected: range(0, 0))
 at org.apache.arrow.memory.ArrowBuf.checkIndexD(ArrowBuf.java:318)
 at org.apache.arrow.memory.ArrowBuf.chk(ArrowBuf.java:305)
 at org.apache.arrow.memory.ArrowBuf.getInt(ArrowBuf.java:424)
 at org.apache.arrow.vector.util.VectorAppender.visit(VectorAppender.java:195)
 at org.apache.arrow.vector.util.VectorAppender.visit(VectorAppender.java:45)
 at org.apache.arrow.vector.complex.ListVector.accept(ListVector.java:449)

Reporter: Nick Bruno / @nbruno

PRs and other links:

• GitHub Pull Request #9581

_{Note: This issue was originally created as ARROW-11788. Please see the migration documentation for further details.}

[asfimport]

Nick Bruno / @nbruno:
I can also look at this one and submit a PR for it.

[asfimport]

Liya Fan / @liyafan82:
Issue resolved by pull request 9581
#9581