[tracker] libtracker-fts: Fix invalid blob length calculation

[Carlos Garnacho <carlosg src gnome org>]

commit b3b3cbb45ec27b13a8dbbd71b6a04c8376a20412
Author: Haithem BEN GHORBAL <haithem benghorbal gmail com>
Date:   Mon Feb 8 16:57:48 2016 +0100

    libtracker-fts: Fix invalid blob length calculation
    
    The blob lenght is defined to be in bytes.

 src/libtracker-fts/tracker-fts.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/src/libtracker-fts/tracker-fts.c b/src/libtracker-fts/tracker-fts.c
index a385d6c..0571fb0 100644
--- a/src/libtracker-fts/tracker-fts.c
+++ b/src/libtracker-fts/tracker-fts.c
@@ -159,6 +159,7 @@ function_weights (sqlite3_context *context,
 {
        static guint *weights = NULL;
        static GMutex mutex;
+       static gint length;
        int rc = SQLITE_DONE;
 
        g_mutex_lock (&mutex);
@@ -190,6 +191,7 @@ function_weights (sqlite3_context *context,
                sqlite3_finalize (stmt);
 
                if (rc == SQLITE_DONE) {
+                       length = weight_array->len * g_array_get_element_size (weight_array);
                        weights = (guint *) g_array_free (weight_array, FALSE);
                } else {
                        g_array_free (weight_array, TRUE);
@@ -199,7 +201,7 @@ function_weights (sqlite3_context *context,
        g_mutex_unlock (&mutex);
 
        if (rc == SQLITE_DONE)
-               sqlite3_result_blob (context, weights, sizeof (weights), NULL);
+               sqlite3_result_blob (context, weights, length, NULL);
        else
                sqlite3_result_error_code (context, rc);
 }
@@ -210,9 +212,11 @@ function_property_names (sqlite3_context *context,
                          sqlite3_value   *argv[])
 {
        gchar **property_names;
+       gint length;
 
        property_names = g_private_get (&property_names_key);
-       sqlite3_result_blob (context, property_names, sizeof (property_names), NULL);
+       length = g_strv_length (property_names) * sizeof (gchar *);
+       sqlite3_result_blob (context, property_names, length, NULL);
 }
 
 static void