[anjuta] project-manager: Fix a crash when closing a project

[Sebastien Granjoux <sgranjoux src gnome org>]

commit 9b0a421788b34804275cadc296d0ba8162dbd151
Author: SÃbastien Granjoux <seb sfo free fr>
Date:   Sun Jun 26 17:08:03 2011 +0200

    project-manager: Fix a crash when closing a project

 plugins/project-manager/project.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/plugins/project-manager/project.c b/plugins/project-manager/project.c
index 35b15e4..68f7554 100644
--- a/plugins/project-manager/project.c
+++ b/plugins/project-manager/project.c
@@ -233,9 +233,10 @@ anjuta_pm_project_unload (AnjutaPmProject *project, GError **error)
 	anjuta_shell_remove_value (project->plugin->shell,
 	                           IANJUTA_PROJECT_MANAGER_CURRENT_PROJECT,
 	                           NULL);
-	
+
 	if (project->project) g_object_unref (project->project);
 	project->project = NULL;
+	project->root = NULL;
 	project->loaded = FALSE;
 	project->node_capabilities = 0;