[gnome-software] Do not show a blank space if a GsApp version is not known

[Richard Hughes <rhughes src gnome org>]

commit 8823ed35b2827cfd1a11cf5fe15f9aed1f744940
Author: Richard Hughes <richard hughsie com>
Date:   Wed Oct 16 14:10:24 2013 +0100

    Do not show a blank space if a GsApp version is not known

 src/gs-shell-details.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/src/gs-shell-details.c b/src/gs-shell-details.c
index 60a23a1..3735c95 100644
--- a/src/gs-shell-details.c
+++ b/src/gs-shell-details.c
@@ -442,7 +442,13 @@ gs_shell_details_refresh_all (GsShellDetails *shell_details)
 
        /* set version */
        widget = GTK_WIDGET (gtk_builder_get_object (priv->builder, "label_details_version_value"));
-       gtk_label_set_label (GTK_LABEL (widget), gs_app_get_version (priv->app));
+       tmp = gs_app_get_version (priv->app);
+       if (tmp != NULL){
+               gtk_label_set_label (GTK_LABEL (widget), tmp);
+       } else {
+               /* TRANSLATORS: this is where the version is not known */
+               gtk_label_set_label (GTK_LABEL (widget), _("Unknown"));
+       }
 
        /* set the size */
        widget = GTK_WIDGET (gtk_builder_get_object (priv->builder, "label_details_size_value"));