memleak in plugins/orientation/gsd-orientation-manager.c

in plugins/orientation/gsd-orientation-manager.c mpu_timer(), the code is leaking g_build_filename() calls. The implication of this leak is severe since it's called very often. The graph attached show evolution of memory usage of g-s-d over a period of 10h or so and g-s-d leaked 9MB during that time.

a proposed patch:
--- gsd-orientation-manager.c.orig 2013-02-12 12:31:34.000000000 +0100
+++ gsd-orientation-manager.c 2013-02-13 10:35:19.496823747 +0100
@@ -438,13 +438,19 @@
 static gboolean mpu_timer(GsdOrientationManager *manager) {
  int x, y;
  static gboolean first = TRUE;
+ gchar *filename_x = NULL;
+ gchar *filename_y = NULL;
  OrientationUp orientation = manager->priv->prev_orientation;

         if (manager->priv->xrandr_proxy == NULL)
                 return TRUE;

- x = read_sysfs_attr_as_int(g_build_filename(manager->priv->sysfs_path, "in_accel_x_raw", NULL));
- y = read_sysfs_attr_as_int(g_build_filename(manager->priv->sysfs_path, "in_accel_y_raw", NULL));
+ filename_x = g_build_filename(manager->priv->sysfs_path, "in_accel_x_raw", NULL);
+ filename_y = g_build_filename(manager->priv->sysfs_path, "in_accel_y_raw", NULL);
+ x = read_sysfs_attr_as_int(filename_x);
+ y = read_sysfs_attr_as_int(filename_y);
+ g_free(filename_x);
+ g_free(filename_y);

  if (x > MPU_THRESHOLD)
   orientation = ORIENTATION_NORMAL;

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: gnome-settings-daemon 3.6.4-0ubuntu5
ProcVersionSignature: Ubuntu 3.8.0-5.10-generic 3.8.0-rc6
Uname: Linux 3.8.0-5-generic x86_64
ApportVersion: 2.8-0ubuntu4
Architecture: amd64
Date: Wed Feb 13 10:36:35 2013
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-settings-daemon
UpgradeStatus: Upgraded to raring on 2012-01-31 (378 days ago)