[gtk+] win32: Don't use API_CALL for SetWindowLong

[Alexander Larsson <alexl src gnome org>]

commit 2788efeb5e4ac957f71fc1da32059beb8b150293
Author: Alexander Larsson <alexl redhat com>
Date:   Thu Oct 27 17:16:46 2011 +0200

    win32: Don't use API_CALL for SetWindowLong
    
    This can return 0 without it being an error.
    Should fix the last issue with bug #142874

 gdk/win32/gdkwindow-win32.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gdk/win32/gdkwindow-win32.c b/gdk/win32/gdkwindow-win32.c
index 35ec5a6..68d58c0 100644
--- a/gdk/win32/gdkwindow-win32.c
+++ b/gdk/win32/gdkwindow-win32.c
@@ -3184,9 +3184,9 @@ gdk_win32_window_set_opacity (GdkWindow *window,
   exstyle = GetWindowLong (GDK_WINDOW_HWND (window), GWL_EXSTYLE);
 
   if (!(exstyle & WS_EX_LAYERED))
-    API_CALL (SetWindowLong, (GDK_WINDOW_HWND (window),
-			      GWL_EXSTYLE,
-			      exstyle | WS_EX_LAYERED));
+    SetWindowLong (GDK_WINDOW_HWND (window),
+		    GWL_EXSTYLE,
+		    exstyle | WS_EX_LAYERED);
 
   setLayeredWindowAttributes = 
     (PFN_SetLayeredWindowAttributes)GetProcAddress (GetModuleHandle ("user32.dll"), "SetLayeredWindowAttributes");