libzfs: use zfs_strerror() in place of strerror()

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Signed-off-by: Richard Kojedzinszky <richard@kojedz.in>
Closes #15793

lib/libzfs/os/freebsd/libzfs_compat.c

@@ -212,7 +212,7 @@ libzfs_error_init(int error)
 		msglen -= len;
 	}
 
-	(void) snprintf(msg, msglen, "%s", strerror(error));
+	(void) snprintf(msg, msglen, "%s", zfs_strerror(error));
 
 	return (errbuf);
 }