*: hopefully all setup_common_bufsiz() are in place

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

util-linux/umount.c

@@ -103,6 +103,7 @@ int umount_main(int argc UNUSED_PARAM, char **argv)
 		if (opt & OPT_ALL)
 			bb_error_msg_and_die("can't open '%s'", bb_path_mtab_file);
 	} else {
+		setup_common_bufsiz();
 		while (getmntent_r(fp, &me, bb_common_bufsiz1, COMMON_BUFSIZE)) {
 			/* Match fstype if passed */
 			if (!match_fstype(&me, fstype))