libselinux: Close old selabel handle when setting a new one

In selinux_restorecon_set_sehandle(), close the old selabel handle
(if it exists) before setting the new one.

Signed-off-by: James Carter <[email protected]>
Acked-by: Petr Lautrbach <[email protected]>

Author: jwcart2

libselinux/src/selinux_restorecon.c

@@ -1367,6 +1367,10 @@ void selinux_restorecon_set_sehandle(struct selabel_handle *hndl)
 	unsigned char *fc_digest;
 	size_t num_specfiles, fc_digest_len;
 
+	if (fc_sehandle) {
+		selabel_close(fc_sehandle);
+	}
+
 	fc_sehandle = hndl;
 	if (!fc_sehandle)
 		return;