[gnome-software] trivial: Use a nice error message when double clicking on a random file

[Richard Hughes <rhughes src gnome org>]

commit 8e8a5a89bdfa30d704c4a7d316166e7025be9665
Author: Richard Hughes <richard hughsie com>
Date:   Fri Jul 15 14:32:19 2016 +0100

    trivial: Use a nice error message when double clicking on a random file

 src/gs-plugin-loader.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gs-plugin-loader.c b/src/gs-plugin-loader.c
index 6c1dfb2..066068b 100644
--- a/src/gs-plugin-loader.c
+++ b/src/gs-plugin-loader.c
@@ -4243,7 +4243,7 @@ gs_plugin_loader_file_to_app_thread_cb (GTask *task,
        if (gs_app_list_length (state->list) != 1) {
                g_task_return_new_error (task,
                                         GS_PLUGIN_ERROR,
-                                        GS_PLUGIN_ERROR_FAILED,
+                                        GS_PLUGIN_ERROR_NOT_SUPPORTED,
                                         "no application was created for %s",
                                         g_file_get_path (state->file));
                return;