fix issue found by SAST testing (see RHEL-23320)

Error: RESOURCE_LEAK (CWE-772):
usermode-1.114/gsmclient.c:200: alloc_fn: Storage is returned from allocation function "g_get_current_dir".
usermode-1.114/gsmclient.c:200: noescape: Resource "g_get_current_dir()" is not freed or pointed-to in "smprop_new_string".
usermode-1.114/gsmclient.c:200: leaked_storage: Failing to save or free storage allocated by "g_get_current_dir()" leaks it.

1. 198| * with an empty proplist)
2. 199| */
3. 200|-> push_prop (client, smprop_new_string (GSM_CLIENT_PROPERTY_CURRENT_DIRECTORY,
4. 201| g_get_current_dir (), -1));
5. 202|

   Please provide the package NVR for which bug is seen:

usermode-1.114