[gtk/wip/baedert/test-cflags] demos/icon-browser: Add common_cflags to build

[Timm Bäder <baedert src gnome org>]

commit e444d7315c723f173591c20634a550f10a1467d2
Author: Timm Bäder <mail baedert org>
Date:   Fri Mar 6 18:53:05 2020 +0100

    demos/icon-browser: Add common_cflags to build
    
    And fix the generated warnings

 demos/icon-browser/iconbrowserwin.c | 2 ++
 demos/icon-browser/meson.build      | 1 +
 2 files changed, 3 insertions(+)
---
diff --git a/demos/icon-browser/iconbrowserwin.c b/demos/icon-browser/iconbrowserwin.c
index 471a7d1bc2..858e246c5e 100644
--- a/demos/icon-browser/iconbrowserwin.c
+++ b/demos/icon-browser/iconbrowserwin.c
@@ -383,6 +383,8 @@ get_image_paintable (GtkImage *image)
       if (icon == NULL)
         return NULL;
       return GDK_PAINTABLE (icon);
+    case GTK_IMAGE_GICON:
+    case GTK_IMAGE_EMPTY:
     default:
       g_warning ("Image storage type %d not handled",
                  gtk_image_get_storage_type (image));
diff --git a/demos/icon-browser/meson.build b/demos/icon-browser/meson.build
index a3ec8664fa..6a8cd80e40 100644
--- a/demos/icon-browser/meson.build
+++ b/demos/icon-browser/meson.build
@@ -11,6 +11,7 @@ iconbrowser_resources = gnome.compile_resources('iconbrowser_resources',
 
 executable('gtk4-icon-browser',
            iconbrowser_sources, iconbrowser_resources,
+           c_args: common_cflags,
            dependencies: libgtk_dep,
            include_directories: confinc,
            gui_app: true,