Trying ken's fix for windows python
diff --git a/config.w32 b/config.w32
index 579c6d5..62b8dcd 100644
--- a/config.w32
+++ b/config.w32
@@ -122,7 +122,7 @@
     "src\\core\\lib\\iomgr\\socket_utils_linux.cc " +
     "src\\core\\lib\\iomgr\\socket_utils_posix.cc " +
     "src\\core\\lib\\iomgr\\socket_utils_uv.cc " +
-    "src\\core\\lib\\iomgr\\socket_utils_windows.c " +
+    "src\\core\\lib\\iomgr\\socket_utils_windows.cc " +
     "src\\core\\lib\\iomgr\\socket_windows.cc " +
     "src\\core\\lib\\iomgr\\tcp_client_posix.cc " +
     "src\\core\\lib\\iomgr\\tcp_client_uv.cc " +