[gtranslator] Include gtr-utils in GtrTabLabel

[Daniel Garcia Moreno <danigm src gnome org>]

commit e6d72dcf4c4c88bab32f931c888dd92962c4e93b
Author: Daniel García Moreno <dani danigm net>
Date:   Wed Mar 30 21:35:39 2022 +0200

    Include gtr-utils in GtrTabLabel
    
    This is needed to get the gtk_box_append function.

 src/gtr-tab-label.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/gtr-tab-label.c b/src/gtr-tab-label.c
index b57581ba..0c184d61 100644
--- a/src/gtr-tab-label.c
+++ b/src/gtr-tab-label.c
@@ -25,6 +25,7 @@
 
 #include <glib/gi18n.h>
 #include <gtk/gtk.h>
+#include "gtr-utils.h"
 #include "gtr-tab-label.h"
 #include "gtr-close-button.h"