[gthumb] fixed possible crash after closing the context menu in the folder tree

[Paolo Bacchilega <paobac src gnome org>]

commit a8684c70afc9dcca81fb653b8d47bdad501af1a6
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Mon Mar 26 18:02:16 2012 +0200

    fixed possible crash after closing the context menu in the folder tree

 gthumb/gth-browser.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/gthumb/gth-browser.c b/gthumb/gth-browser.c
index 9e74f87..cf111a1 100644
--- a/gthumb/gth-browser.c
+++ b/gthumb/gth-browser.c
@@ -2802,9 +2802,10 @@ folder_popup_hide_cb (GtkWidget *widget,
 		return;
 
 	path = gth_folder_tree_get_path (GTH_FOLDER_TREE (browser->priv->folder_tree), browser->priv->location->file);
-	gth_folder_tree_select_path (GTH_FOLDER_TREE (browser->priv->folder_tree), path);
-
-	gtk_tree_path_free (path);
+	if (path != NULL) {
+		gth_folder_tree_select_path (GTH_FOLDER_TREE (browser->priv->folder_tree), path);
+		gtk_tree_path_free (path);
+	}
 }