[glib: 2/3] gunixmounts: Document when g_unix_mount_at() returns NULL

[Ondrej Holy <oholy src gnome org>]

commit 0362bf5d64a4b1cb0b0ad0b49e230d4ba526cc69
Author: Philip Withnall <pwithnall endlessos org>
Date:   Wed Jun 9 16:01:44 2021 +0100

    gunixmounts: Document when g_unix_mount_at() returns NULL
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>

 gio/gunixmounts.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/gio/gunixmounts.c b/gio/gunixmounts.c
index 3df3241ac..46a41fc41 100644
--- a/gio/gunixmounts.c
+++ b/gio/gunixmounts.c
@@ -1593,6 +1593,8 @@ g_unix_mounts_get (guint64 *time_read)
  * If more mounts have the same mount path, the last matching mount
  * is returned.
  *
+ * This will return %NULL if there is no mount point at @mount_path.
+ *
  * Returns: (transfer full) (nullable): a #GUnixMountEntry.
  **/
 GUnixMountEntry *