Added protection when trying to release a project not yet created in the DB

Fixes LBCORE-1392

LbRelease/python/LbRelease/SoftConfDB/SoftConfDB.py

@@ -975,7 +975,11 @@ class SoftConfDB(object):
         node_pv =  self.mNeoDB.get_indexed_node("ProjectVersion",
                                                 "ProjectVersion",
                                                 project + "_" + version)
-
+        
+        # Does not make sense if the node was not created
+        if not node_pv:
+            return
+        
         if self.node_release.has_relationship_with(node_pv):
             for r in node_pv.get_relationships():
                 if r.is_type("RELEASEREQ"):