[gnome-software] Check the application source does not exist before adding

[Richard Hughes <rhughes src gnome org>]

commit 96a3f592789803f39400defb68896f96de4f38e4
Author: Richard Hughes <richard hughsie com>
Date:   Tue Jan 28 22:11:32 2014 +0000

    Check the application source does not exist before adding

 src/gs-app.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/src/gs-app.c b/src/gs-app.c
index b689793..97f355e 100644
--- a/src/gs-app.c
+++ b/src/gs-app.c
@@ -593,6 +593,15 @@ gs_app_get_source_default (GsApp *app)
 void
 gs_app_add_source (GsApp *app, const gchar *source)
 {
+       const gchar *tmp;
+       guint i;
+
+       /* check source doesn't already exist */
+       for (i = 0; i < app->priv->sources->len; i++) {
+               tmp = g_ptr_array_index (app->priv->sources, i);
+               if (g_strcmp0 (tmp, source) == 0)
+                       return;
+       }
        g_ptr_array_add (app->priv->sources, g_strdup (source));
 }