Project: mulestudio
Issue STUDIO-3350: NPE when deleting a project 
Steps to reproduce: 1.- Make a clone of the followed project: https://github.com/mulesoft/servicesource-dataloader 2.- Do an Import with maven of the project 3.- After the project is imported, delete the project without deleting the files. Issue: The followed NPE is raised, {code} java.lang.NullPointerException org.mule.tooling.messageflow.editor.MultiPageMessageFlowEditor.checkForProjectMove(MultiPageMessageFlowEditor.java:331) org.mule.tooling.messageflow.editor.MultiPageMessageFlowEditor.resourceChanged(MultiPageMessageFlowEditor.java:297) org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291) org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285) org.eclipse.core.internal.events.NotificationManager.handleEvent(NotificationManager.java:261) org.eclipse.core.internal.resources.Workspace.broadcastEvent(Workspace.java:390) org.eclipse.core.internal.resources.Resource.broadcastPreDeleteEvent(Resource.java:2030) org.eclipse.core.internal.resources.Resource.delete(Resource.java:788) org.eclipse.core.internal.resources.Project.delete(Project.java:344) org.eclipse.ltk.core.refactoring.resource.DeleteResourceChange.perform(DeleteResourceChange.java:160) org.eclipse.ltk.core.refactoring.CompositeChange.perform(CompositeChange.java:278) org.eclipse.ltk.core.refactoring.CompositeChange.perform(CompositeChange.java:278) org.eclipse.ltk.core.refactoring.PerformChangeOperation$1.run(PerformChangeOperation.java:258) org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344) org.eclipse.ltk.core.refactoring.PerformChangeOperation.executeChange(PerformChangeOperation.java:306) org.eclipse.ltk.internal.ui.refactoring.UIPerformChangeOperation.executeChange(UIPerformChangeOperation.java:92) org.eclipse.ltk.core.refactoring.PerformChangeOperation.run(PerformChangeOperation.java:218) org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344) org.eclipse.ltk.internal.ui.refactoring.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:87) org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121) {code}
Story points: 1