NPE when searching for pom.xml

Description of problem:

I have an own spring application war and during deployment the kie search for a pom.properties. Though the pom.properties is there, it cannot find it (I'll file another BZ for that), so it tries to generate one from pom.xml but it will never happen due to a NPE.

I get NPE on the line https://github.com/droolsjbpm/drools/blob/master/drools-compiler/src/main/java/org/drools/compiler/kie/builder/impl/ClasspathKieProject.java#L228

it's the line (for ( File folder = new File( rootPath ); folder != null; folder = new File( folder.getParent() ) ) {)

How reproducible:

Steps to Reproduce:
1. Unzip the attached springframework.zip into bpms6er5/modules/system/layers/base/org
2. Deploy the attached springapp.war
3. See NPE during the deployment