[gnome-software] trivial: Don't auto-keyword AppStream files with blank origins

[Richard Hughes <rhughes src gnome org>]

commit 8848254754f127d6dbfc1247dc35e1b76bfedbf6
Author: Richard Hughes <richard hughsie com>
Date:   Wed Jun 8 20:14:19 2016 +0100

    trivial: Don't auto-keyword AppStream files with blank origins

 src/plugins/gs-plugin-appstream.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/gs-plugin-appstream.c b/src/plugins/gs-plugin-appstream.c
index 42bada1..279eafd 100644
--- a/src/plugins/gs-plugin-appstream.c
+++ b/src/plugins/gs-plugin-appstream.c
@@ -110,6 +110,8 @@ gs_plugin_appstream_get_origins_hash (GPtrArray *array)
        keys = g_hash_table_get_keys (origins);
        for (l = keys; l != NULL; l = l->next) {
                tmp = l->data;
+               if (tmp == NULL || tmp[0] == '\0')
+                       continue;
                cnt = g_hash_table_lookup (origins, tmp);
                perc = (100.f / (gdouble) array->len) * (gdouble) (*cnt);
                g_debug ("origin %s provides %i apps (%.0f%%)", tmp, *cnt, perc);