PyModule_AddObject steals a reference.  Fix all of the double calls to it by adding a Py_INCREF.  Also, some other assorted hacks which probably shouldn't be necessary but are at the moment.
diff --git a/src/ssl/connection.c b/src/ssl/connection.c
index 6ee484d..ec15a3c 100755
--- a/src/ssl/connection.c
+++ b/src/ssl/connection.c
@@ -1413,6 +1413,9 @@
         return 0;
     }
 
+    /* PyModule_AddObject steals a reference.
+     */
+    Py_INCREF((PyObject *)&ssl_Connection_Type);
     if (PyModule_AddObject(module, "Connection", (PyObject *)&ssl_Connection_Type) != 0) {
         return 0;
     }