[gtk+/gtk-3-16] testdialog: Error out if templates are missing

[Matthias Clasen <matthiasc src gnome org>]

commit ff7d67b33cfa2b070eb94e21f2cf42f5497ff221
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jul 17 15:59:23 2015 -0400

    testdialog: Error out if templates are missing
    
    Coverity complained about us ignoring the return value
    here, and it is nicer to get an error message about this.

 tests/testdialog.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/tests/testdialog.c b/tests/testdialog.c
index 3c95507..df36f0f 100644
--- a/tests/testdialog.c
+++ b/tests/testdialog.c
@@ -215,7 +215,9 @@ my_dialog_class_init (MyDialogClass *class)
   gsize size;
   GBytes *bytes;
 
-  g_file_get_contents ("mydialog.ui", &buffer, &size, NULL);
+  if (!g_file_get_contents ("mydialog.ui", &buffer, &size, NULL))
+    g_error ("Template file mydialog.ui not found");
+
   bytes = g_bytes_new_static (buffer, size);
   gtk_widget_class_set_template (GTK_WIDGET_CLASS (class), bytes);
   g_bytes_unref (bytes);
@@ -283,7 +285,9 @@ my_dialog2_class_init (MyDialog2Class *class)
   gsize size;
   GBytes *bytes;
 
-  g_file_get_contents ("mydialog2.ui", &buffer, &size, NULL);
+  if (!g_file_get_contents ("mydialog2.ui", &buffer, &size, NULL))
+    g_error ("Template file mydialog2.ui not found");
+
   bytes = g_bytes_new_static (buffer, size);
   gtk_widget_class_set_template (GTK_WIDGET_CLASS (class), bytes);
   g_bytes_unref (bytes);