[gtk/wip/otte/gleanup] gdkdisplay-win32.c: Don't call ReleaseDC() unnecessarily



commit 0dae77274b22cb368cbac9590cfb4d846ee41678
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Mon Jul 19 17:13:53 2021 +0800

    gdkdisplay-win32.c: Don't call ReleaseDC() unnecessarily
    
    The dummy Win32 window that we use to capture display change events and
    to create dummy WGL contexts was created with CS_OWNDC, so we really do
    not need to (and should not) call ReleaseDC() on the HDC that we
    obtained from it, so drop these calls.

 gdk/win32/gdkdisplay-win32.c | 6 ------
 1 file changed, 6 deletions(-)
---
diff --git a/gdk/win32/gdkdisplay-win32.c b/gdk/win32/gdkdisplay-win32.c
index 3a69ee448a..0eb108e6e0 100644
--- a/gdk/win32/gdkdisplay-win32.c
+++ b/gdk/win32/gdkdisplay-win32.c
@@ -664,12 +664,6 @@ gdk_win32_display_dispose (GObject *object)
           display_win32->dummy_context_wgl.hglrc = NULL;
         }
 
-      if (display_win32->dummy_context_wgl.hdc != NULL)
-        {
-          ReleaseDC (display_win32->hwnd, display_win32->dummy_context_wgl.hdc);
-          display_win32->dummy_context_wgl.hdc = NULL;
-        }
-
       DestroyWindow (display_win32->hwnd);
       display_win32->hwnd = NULL;
     }


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