[libwnck/wip/muktupavels/gtk4] selector: remove error argument from gtk_css_provider_load_from_data

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 95be9b85060b06450adcecdfad3315b77dcd7958
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun May 21 01:58:22 2017 +0300

    selector: remove error argument from gtk_css_provider_load_from_data

 libwnck/selector.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libwnck/selector.c b/libwnck/selector.c
index 7eb6f15..b82b3b9 100644
--- a/libwnck/selector.c
+++ b/libwnck/selector.c
@@ -1130,7 +1130,7 @@ wnck_selector_fill (WnckSelector *selector)
                                    "#gnome-panel-window-menu-menu-bar {\n"
                                    " border-width: 0px;\n"
                                    "}",
-                                   -1, NULL);
+                                   -1);
   gtk_style_context_add_provider (gtk_widget_get_style_context (GTK_WIDGET (selector)),
                                   GTK_STYLE_PROVIDER (provider),
                                   GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);