[tracker] rss: Account for a same feed message coming from different channels

[Carlos Garnacho <carlosg src gnome org>]

commit 832baf7d4c0dd5aab245065d5ba594d958163d4d
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Jul 17 01:26:24 2015 +0200

    rss: Account for a same feed message coming from different channels
    
    Unfortunately the nmo:communicationChannel docs are very explicit about
    the property cardinality. So we just create the mfo:FeedMessage for
    the first channel, and make it bail out any next time it would be
    added, from the same mfo:FeedChannel or another.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=752484

 src/miners/rss/tracker-miner-rss.c |   10 ++--------
 1 files changed, 2 insertions(+), 8 deletions(-)
---
diff --git a/src/miners/rss/tracker-miner-rss.c b/src/miners/rss/tracker-miner-rss.c
index 96b19cd..eda8716 100644
--- a/src/miners/rss/tracker-miner-rss.c
+++ b/src/miners/rss/tracker-miner-rss.c
@@ -776,22 +776,16 @@ feed_item_check_exists (TrackerMinerRSS *miner,
                         GrssFeedItem    *item)
 {
        FeedItemInsertData *fiid;
-       GrssFeedChannel *feed;
        gchar *query;
-       gchar *communication_channel;
        const gchar *url;
 
        url = get_message_url (item);
-       feed = grss_feed_item_get_parent (item);
-       communication_channel = g_object_get_data (G_OBJECT (feed), "subject");
 
        query = g_strdup_printf ("ASK {"
                                 "  ?message a mfo:FeedMessage ;"
-                                "             nie:url \"%s\";"
-                                "             nmo:communicationChannel <%s> "
+                                "             nie:url \"%s\""
                                 "}",
-                                url,
-                                communication_channel);
+                                url);
 
        fiid = feed_item_insert_data_new (miner, item);