*** Description of problem:

When the deployment fails. An exception like the following one is present in the server log then an artifact is created in the repository.

11:01:42,949 ERROR [stderr] (http-/127.0.0.1:8080-4) java.lang.NullPointerException
11:01:42,950 ERROR [stderr] (http-/127.0.0.1:8080-4) 	at org.jbpm.kie.services.impl.KModuleDeploymentService.deploy(KModuleDeploymentService.java:68)
11:01:42,950 ERROR [stderr] (http-/127.0.0.1:8080-4) 	at org.jbpm.kie.services.impl.KModuleDeploymentService$Proxy$_$$_WeldClientProxy.deploy(KModuleDeploymentService$Proxy$_$$_WeldClientProxy.java)
11:01:42,951 ERROR [stderr] (http-/127.0.0.1:8080-4) 	at org.jbpm.console.ng.bd.backend.server.DeploymentManagerEntryPointImpl.deploy(DeploymentManagerEntryPointImpl.java:77)
11:01:42,951 ERROR [stderr] (http-/127.0.0.1:8080-4) 	at org.jbpm.console.ng.bd.backend.server.DeploymentManagerEntryPointImpl.autoDeploy(DeploymentManagerEntryPointImpl.java:165)
11:01:42,952 ERROR [stderr] (http-/127.0.0.1:8080-4) 	at org.jbpm.console.ng.bd.backend.server.DeploymentManagerEntryPointImpl$Proxy$_$$_WeldClientProxy.autoDeploy(DeploymentManagerEntryPointImpl$Proxy$_$$_WeldClientProxy.java)

*** How reproducible:

Steps to Reproduce:
1) Create a new project (e.g. in jbpm-playground.git)
2) Hit the "Build & Deploy" button
3) Check the repository.

*** Actual results:

Jar file present in the repository.


*** Expected results:

No file in the repository (or an older version) if the deployment failed.