Suppress Py3k resource warnings for sockets.

src/ZEO/tests/forker.py

@@ -284,6 +284,7 @@ def get_port2(test):
         except socket.error as e:
             if e.args[0] != errno.EADDRINUSE:
                 raise
+            s.close()
             continue
 
         if not (can_connect(port) or can_connect(port+1)):
@@ -296,13 +297,15 @@ def get_port2(test):
 
 def can_connect(port):
     c = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    try:
         try:
             c.connect(('localhost', port))
         except socket.error:
             return False  # Perhaps we should check value of error too.
         else:
-        c.close()
             return True
+    finally:
+        c.close()
 
 def setUp(test):
     ZODB.tests.util.setUp(test)