[gnome-text-editor] main: init gtk before gtk_source_init()

[Christian Hergert <chergert src gnome org>]

commit 85bb2f805edc5fddebbbde7953c7795c6b9794d6
Author: Christian Hergert <chergert redhat com>
Date:   Mon Oct 11 17:07:50 2021 -0700

    main: init gtk before gtk_source_init()

 src/main.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/main.c b/src/main.c
index 17b9085..434e78b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -35,6 +35,7 @@ main (int   argc,
   bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
   textdomain (GETTEXT_PACKAGE);
 
+  gtk_init ();
   gtk_source_init ();
 
   app = _editor_application_new ();