Fix a potential crash

gns3server/controller/__init__.py

@@ -378,7 +378,7 @@ class Controller:
         :param load: Load the topology
         """
         topo_data = load_topology(path)
-        topology = topo_data.pop("topology")
+        topo_data.pop("topology")
         topo_data.pop("version")
         topo_data.pop("revision")
         topo_data.pop("type")

gns3server/controller/project.py

@@ -440,7 +440,7 @@ class Project:
         Create a link. By default the link is empty
         """
         if link_id and link_id in self._links:
-            return self._links[link.id]
+            return self._links[link_id]
         link = UDPLink(self, link_id=link_id)
         self._links[link.id] = link
         self.dump()