dialog.c: add back gdk_threads functions

Signed-off-by: Cristina Suteu <[email protected]>

dialogs.c

@@ -1115,6 +1115,7 @@ static gboolean version_info_show(gpointer data)
 	gchar *buf;
 
 	/* don't bother showing the dialog if version check failed (applies only at startup) */
+	gdk_threads_enter();
 	if (!release && !data)
 		return false;
 
@@ -1183,7 +1184,7 @@ static gboolean version_info_show(gpointer data)
 	gtk_widget_hide(_dialogs->latest_version);
 
 end:
-
+	gdk_threads_leave();
 	return false;
 }