[gnome-commander] Assert for plugin!=NULL BEFORE using it

[Piotr Eljasiak <epiotr src gnome org>]

commit 9f65ddafe6c0cebaf9082ff70cbf6a9c59db7df1
Author: Piotr Eljasiak <epiotr src gnome org>
Date:   Fri Jan 7 23:35:06 2011 +0100

    Assert for plugin!=NULL BEFORE using it

 src/plugin_manager.cc |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/plugin_manager.cc b/src/plugin_manager.cc
index 65d812f..322ec17 100644
--- a/src/plugin_manager.cc
+++ b/src/plugin_manager.cc
@@ -381,10 +381,11 @@ static void on_about (GtkButton *button, GtkWidget *dialog)
 {
     GtkCList *list = GTK_CLIST (lookup_widget (dialog, "avail_list"));
     PluginData *data = get_selected_plugin (list);
-    GtkWidget *about = gnome_cmd_about_plugin_new (data->info);
 
     g_return_if_fail (data != NULL);
 
+    GtkWidget *about = gnome_cmd_about_plugin_new (data->info);
+
     gtk_window_set_transient_for (GTK_WINDOW (about), *main_win);
     g_object_ref (about);
     gtk_widget_show (about);