Null dereference [LUCENE-6627]

[asfimport]

In the file PhraseSlopQueryNode.java, calls to getChild() and getChildren() might return null. Further operations on them might cause null pointer exceptions.

These can be fixed by checking for null in returned values.

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Migrated from LUCENE-6627 by Rishabh Patel, updated May 09 2016

[asfimport]

ASF GitHub Bot (migrated from JIRA)

GitHub user rmp91 opened a pull request:

https://github.com/apache/lucene-solr/pull/173

LUCENE-6627: Checking for null returned by getChild

https://issues.apache.org/jira/browse/LUCENE-6627

You can merge this pull request into a Git repository by running:

$ git pull https://github.com/rmp91/lucene-solr LUCENE-6627

Alternatively you can review and apply these changes as the patch at:

https://github.com/apache/lucene-solr/pull/173.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

This closes `#173`

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commit f589e22d12f2c94c80cdd9a9efd5b659ea4b16b4
Author: Rishabh Patel <rishabh.mahendra.patel@gmail.com>
Date: 2015-06-27T05:58:41Z

LUCENE-6627: Checking for null returned by getChild

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