[tracker] libtracker-miner: Plug leak

[Carlos Garnacho <carlosg src gnome org>]

commit a82e2760ac2093d64313f6b5014503ff8788cbcc
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Nov 27 19:50:43 2016 +0100

    libtracker-miner: Plug leak
    
    If the cursor returns no items, it would be leaked.

 src/libtracker-miner/tracker-decorator-fs.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/src/libtracker-miner/tracker-decorator-fs.c b/src/libtracker-miner/tracker-decorator-fs.c
index af4fbf0..123b40e 100644
--- a/src/libtracker-miner/tracker-decorator-fs.c
+++ b/src/libtracker-miner/tracker-decorator-fs.c
@@ -316,8 +316,10 @@ tracker_decorator_fs_prepend_file (TrackerDecoratorFS *decorator,
        if (!cursor)
                return 0;
 
-       if (!tracker_sparql_cursor_next (cursor, NULL, NULL))
+       if (!tracker_sparql_cursor_next (cursor, NULL, NULL)) {
+               g_object_unref (cursor);
                return 0;
+       }
 
        id = tracker_sparql_cursor_get_integer (cursor, 0);
        class_id = tracker_sparql_cursor_get_integer (cursor, 1);