Pass make codecheck.

mininet/cli.py

@@ -293,7 +293,6 @@ class CLI( Cmd ):
             self.waitForNode( node )
         else:
             error( '*** Unknown command: %s\n' % first )
-        
 
     # pylint: enable-msg=W0613,R0201
 

mininet/topo.py

@@ -132,12 +132,12 @@ class Topo(object):
         if src not in self.ports:
             self.ports[src] = {}
         if dst not in self.ports[src]:
-            # num outlinks    
+            # num outlinks
             self.ports[src][dst] = len(self.ports[src]) + src_base
         if dst not in self.ports:
             self.ports[dst] = {}
         if src not in self.ports[dst]:
-            # num outlinks 
+            # num outlinks
             self.ports[dst][src] = len(self.ports[dst]) + dst_base
 
     def node_enabled(self, dpid):
@@ -185,7 +185,6 @@ class Topo(object):
         '''Returns true if node is a switch.'''
         return self.node_info[n].is_switch
 
-
     def switches(self, enabled = True):
         '''Return switches.