[glib] glocalfile: Fix memory leak in find_topdir_for()

[Philip Withnall <pwithnall src gnome org>]

commit 9275be383f63441e45ead925c8956b2d1a7768b1
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Sat Oct 3 10:48:46 2015 +0100

    glocalfile: Fix memory leak in find_topdir_for()
    
    Coverity CID 1325398.

 gio/glocalfile.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/gio/glocalfile.c b/gio/glocalfile.c
index 60b9560..45023a3 100644
--- a/gio/glocalfile.c
+++ b/gio/glocalfile.c
@@ -1705,13 +1705,17 @@ static char *
 find_topdir_for (const char *file)
 {
   char *dir;
+  char *mountpoint = NULL;
   dev_t dir_dev;
 
   dir = get_parent (file, &dir_dev);
   if (dir == NULL)
     return NULL;
 
-  return find_mountpoint_for (dir, dir_dev);
+  mountpoint = find_mountpoint_for (dir, dir_dev);
+  g_free (dir);
+
+  return mountpoint;
 }
 
 static char *