Don't open new connections if have enough (excess == 0)

src/network/connectionpool.py

@@ -290,7 +290,7 @@ class BMConnectionPool(object):
             pending = len(self.outboundConnections) - established_num
             excess = established_num - BMConfigParser().safeGetInt(
                 'bitmessagesettings', 'maxoutboundconnections')
-            if excess > 0:
+            if excess >= 0:
                 for _ in range(excess):
                     established.pop().handle_close()
             else: