[wing] namedpipelistener: do not close the handle if it is invalid

[Ignacio Casal Quinteiro <icq src gnome org>]

commit b9f73c5a081673ae8f7118ec28039974d933712a
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Thu Jul 14 13:21:05 2016 +0200

    namedpipelistener: do not close the handle if it is invalid

 wing/wingnamedpipelistener.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/wing/wingnamedpipelistener.c b/wing/wingnamedpipelistener.c
index de2409a..a9bdaab 100644
--- a/wing/wingnamedpipelistener.c
+++ b/wing/wingnamedpipelistener.c
@@ -68,7 +68,8 @@ static void
 pipe_data_free (PipeData *data)
 {
   g_free (data->pipe_name);
-  CloseHandle (data->handle);
+  if (data->handle != INVALID_HANDLE_VALUE)
+    CloseHandle (data->handle);
   CloseHandle (data->overlapped.hEvent);
   g_clear_object (&data->source_object);
   g_slice_free (PipeData, data);