[gtk/ci-jobs] Initialize out arguments

[Emmanuele Bassi <ebassi src gnome org>]

commit b130fd053846cbd5726985831d881594ded60aa4
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Jan 29 14:08:34 2020 +0100

    Initialize out arguments
    
    Otherwise GCC will not like it.

 gtk/gtktextbtree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtktextbtree.c b/gtk/gtktextbtree.c
index a4f9b5398f..a98a00b5a2 100644
--- a/gtk/gtktextbtree.c
+++ b/gtk/gtktextbtree.c
@@ -5701,7 +5701,7 @@ tag_changed_cb (GtkTextTagTable *table,
 
       while (view != NULL)
         {
-          gint width, height;
+          gint width = 0, height = 0;
 
           _gtk_text_btree_get_view_size (tree, view->view_id, &width, &height);
           gtk_text_layout_changed (view->layout, 0, height, height);