[gspell/wip/gtk4: 10/11] gspell-app: Adapt to gtk4 API changes

[Timm Bäder <baedert src gnome org>]

commit 0475a3e2d2592ef158bfe8cb25dc2efc23d99bfe
Author: Timm Bäder <mail baedert org>
Date:   Wed Oct 25 11:57:02 2017 +0200

    gspell-app: Adapt to gtk4 API changes
    
    Removes the css error handling for now...

 gspell-app/gspell-app.c |   20 +++++---------------
 1 files changed, 5 insertions(+), 15 deletions(-)
---
diff --git a/gspell-app/gspell-app.c b/gspell-app/gspell-app.c
index b0145a6..973c87f 100644
--- a/gspell-app/gspell-app.c
+++ b/gspell-app/gspell-app.c
@@ -102,7 +102,6 @@ init_view (GspellAppContent *content)
        GspellTextView *gspell_view;
        GtkStyleContext *style_context;
        GtkCssProvider *css_provider;
-       GError *error = NULL;
 
        g_assert (content->view == NULL);
 
@@ -125,20 +124,11 @@ init_view (GspellAppContent *content)
        css_provider = gtk_css_provider_new ();
        gtk_css_provider_load_from_data (css_provider,
                                         "textview { font-size: 120%; }\n",
-                                        -1,
-                                        &error);
+                                        -1);
 
-       if (error == NULL)
-       {
-               gtk_style_context_add_provider (style_context,
-                                               GTK_STYLE_PROVIDER (css_provider),
-                                               GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
-       }
-       else
-       {
-               g_warning ("CSS error: %s", error->message);
-               g_clear_error (&error);
-       }
+       gtk_style_context_add_provider (style_context,
+                                       GTK_STYLE_PROVIDER (css_provider),
+                                       GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
 
        g_object_unref (css_provider);
 }
@@ -169,7 +159,7 @@ gspell_app_content_init (GspellAppContent *content)
        gtk_container_add (GTK_CONTAINER (scrolled_window), GTK_WIDGET (content->view));
        gtk_container_add (GTK_CONTAINER (content), scrolled_window);
 
-       gtk_widget_show_all (GTK_WIDGET (content));
+       gtk_widget_show (GTK_WIDGET (content));
 }
 
 static GspellAppContent *