[gtranslator] Fixed warning in buildtime

[Daniel Mustieles García <dmustieles src gnome org>]

commit 7273784c408555a56bf69f629053f3ddf27adce0
Author: Daniel Mustieles <daniel mustieles gmail com>
Date:   Mon Oct 14 12:36:12 2019 +0200

    Fixed warning in buildtime

 src/gtr-actions-app.c        | 2 +-
 src/gtr-actions-app.h        | 2 +-
 src/gtr-preferences-dialog.c | 1 +
 3 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/src/gtr-actions-app.c b/src/gtr-actions-app.c
index 1ac0e7b8..0f060655 100644
--- a/src/gtr-actions-app.c
+++ b/src/gtr-actions-app.c
@@ -35,7 +35,7 @@
 
 /* Show the user's guide for gtranslator */
 void
-gtr_show_help (GtrWindow *window)
+gtr_show_help (GtkWindow *window)
 {
   gtr_utils_help_display (GTK_WINDOW (window));
 }
diff --git a/src/gtr-actions-app.h b/src/gtr-actions-app.h
index e4de639c..6e3660f5 100644
--- a/src/gtr-actions-app.h
+++ b/src/gtr-actions-app.h
@@ -20,7 +20,7 @@
 
 #include "gtr-window.h"
 
-void gtr_show_help (GtrWindow *window);
+void gtr_show_help (GtkWindow *window);
 
 void gtr_about_dialog (GtrWindow *window);
 
diff --git a/src/gtr-preferences-dialog.c b/src/gtr-preferences-dialog.c
index cfa01176..6aa0f351 100644
--- a/src/gtr-preferences-dialog.c
+++ b/src/gtr-preferences-dialog.c
@@ -25,6 +25,7 @@
 #include <config.h>
 #endif
 
+#include "gtr-actions-app.h"
 #include "gtr-application.h"
 #include "gtr-dirs.h"
 #include "gtr-preferences-dialog.h"