Hostname placeholder changes for auto check

source/ubinstall-gtk.c

@@ -12,8 +12,10 @@ void on_autohostname_check(GtkWidget *, main_window *widgets){
     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(widgets->HostnameSensitiveCheck),1);
     if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widgets->AutoHostnameCheck))){
         gtk_widget_set_sensitive(widgets->HotnameEntry,0);
+        gtk_entry_set_placeholder_text(GTK_ENTRY(widgets->HotnameEntry),"auto");
     }else{
         gtk_widget_set_sensitive(widgets->HotnameEntry,1);
+        gtk_entry_set_placeholder_text(GTK_ENTRY(widgets->HotnameEntry),"ublinux-install");
     }
 }