[libhandy] window-mixin: Fix gtk_style_context_get_state() argument

[Adrien Plazas <aplazas src gnome org>]

commit 7afedcf268073cf6a94ef48239fa42acadc6d0f5
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Fri Aug 14 17:55:01 2020 +0500

    window-mixin: Fix gtk_style_context_get_state() argument
    
    Well, there's that.
    
    Fixes https://gitlab.gnome.org/GNOME/libhandy/-/issues/325
    
    Signed-off-by: Alexander Mikhaylenko <alexm gnome org>

 src/hdy-window-mixin.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/hdy-window-mixin.c b/src/hdy-window-mixin.c
index d55536cb..d240202a 100644
--- a/src/hdy-window-mixin.c
+++ b/src/hdy-window-mixin.c
@@ -371,7 +371,7 @@ hdy_window_mixin_draw (HdyWindowMixin *self,
     h = height - shadow.top - shadow.bottom;
 
     gtk_style_context_get (context,
-                           gtk_style_context_get_state (self->decoration_context),
+                           gtk_style_context_get_state (context),
                            GTK_STYLE_PROPERTY_BORDER_RADIUS, &r,
                            NULL);