[tracker] libtracker-common: Fix memory leak when receiving partial reply plus error in DBus sync call

[Aleksander Morgado <aleksm src gnome org>]

commit cce47049854206260448388d9954d0c71ab364de
Author: Aleksander Morgado <aleksander lanedo com>
Date:   Mon Jul 19 23:56:55 2010 +0200

    libtracker-common: Fix memory leak when receiving partial reply plus error in DBus sync call
    
     * So, we're using g_memory_output_stream_new () with a NULL destroy_function.
       This means we take ownership and control of the internal buffer if the
       GOutputStream. Then, if the SYNC DBus query results in an error, we won't
       pass the stream->data to upper layers, so we need to explicitly free it,
       or a memleak will happen.
    
     * Same issue as in commit 2891b982414900a0844265ea831df83c9dfc9895, but for
       SYNC method this time.

 src/libtracker-common/tracker-dbus.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/src/libtracker-common/tracker-dbus.c b/src/libtracker-common/tracker-dbus.c
index 8f97a8b..ce2c3dd 100644
--- a/src/libtracker-common/tracker-dbus.c
+++ b/src/libtracker-common/tracker-dbus.c
@@ -773,6 +773,10 @@ tracker_dbus_send_and_splice (DBusConnection  *connection,
 			dbus_set_error_from_message (&dbus_error, reply);
 			dbus_set_g_error (error, &dbus_error);
 			dbus_error_free (&dbus_error);
+
+			/* If any error happened, we're not passing any received data, so we
+			 * need to free it */
+			g_free (g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (output_stream)));
 		} else {
 			*dest_buffer = g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (output_stream));
 
@@ -788,6 +792,9 @@ tracker_dbus_send_and_splice (DBusConnection  *connection,
 		             TRACKER_DBUS_ERROR_BROKEN_PIPE,
 		             "Couldn't get results from server");
 		g_error_free (inner_error);
+		/* If any error happened, we're not passing any received data, so we
+		 * need to free it */
+		g_free (g_memory_output_stream_get_data (G_MEMORY_OUTPUT_STREAM (output_stream)));
 	}
 
 	g_object_unref (output_stream);